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| # | Title | Yr | Publisher | Cover | Notes | Cond | Price |
|---|---|---|---|---|---|---|---|
| 51123 | Tower Treasure, The | 1995 | Grosset & Dunlap | H | Hardy Boys #001 glossy blue picture cover | Exc | $4.00 |
| 60989 | Tower Treasure, The | 1995 | Grosset & Dunlap | H | Hardy Boys #001 glossy blue picture cover | Exc | $4.00 |
| 25013 | Tower Treasure, The | 1959 | Grosset & Dunlap | H | Hardy Boys #001; blue matte pc, brown eps | VG | $4.00 |
| 69066 | Tower Treasure, The | 1959 | Grosset & Dunlap | H | Hardy Boys #001; blue matte picture cover Near fine | Exc | $5.00 |
| 24152 | Tower Treasure, The | 1959 | Grosset & Dunlap | H | Hardy Boys #001; blue picture cover glossy | Exc | $4.00 |
| 49291 | Tower Treasure, The | 1959 | Grosset & Dunlap | H | Hardy Boys #001; matte blue picture cover | VG | $4.50 |
| 48100 | House on the Cliff , The | 1959 | Grosset & Dunlap | H | Hardy Boys #002 dark blue yellow lettering DJ BCE | Exc | $20.00 |
| 29301 | House on the Cliff, The | 1959 | Grosset & Dunlap | H | Hardy Boys #002 tan tweed, brown multi-pic eps DJ | VG | $12.00 |
| 70151 | House on the Cliff, The | 1959 | Grosset & Dunlap | H | Hardy Boys #002; glossy blue cover | Exc | $4.00 |
| 73737 | House on the Cliff, The | 1991 | Grosset & Dunlap | H | Hardy Boys #002; matte picture cover brown eps | VG | $5.00 |
| 57940 | House on the Cliff, The | 1927 | Grosset & Dunlap | H | Hardy Boys #002; tan tweed cover, orange eps | VG | $4.00 |
| 61001 | House on the Cliff , The | 1927 | Grosset & Dunlap | H | Hardy Boys #002; tweed yellow spine DJ, orange eps | VG | $16.00 |
| 48101 | Secret of the Old Mill , The | 1962 | Grosset & Dunlap | H | Hardy Boys #003 dark blue cover DJ book club | Exc | $15.00 |
| 22314 | Secret of the Old Mill, The | 1962 | Grosset & Dunlap | H | Hardy Boys #003; blue cover; DJ | Exc | $18.00 |
| 49292 | Secret of the Old Mill, The | 1962 | Grosset & Dunlap | H | Hardy Boys #003; matte blue picture cover | VG | $4.00 |
| 57954 | Secret of the Old Mill, The | 1927 | Grosset & Dunlap | H | Hardy Boys #003; tan tweed, brown eps DJ missing front flap | VG | $8.00 |
| 29871 | Secret of the Old Mill, The | 1927 | Grosset & Dunlap | H | Hardy Boys #003; tan tweed, brown multi-pic eps | VG | $5.00 |
| 20315 | Missing Chums, The | 1928 | Grosset & Dunlap | H | Hardy Boys #004; brown cover orange eps war paper | VG | $8.00 |
| 35803 | Missing Chums, The | 1962 | Grosset & Dunlap | H | Hardy Boys #004; glossy blue cover | Exc | $4.00 |
| 55027 | Missing Chums, The | 1962 | Grosset & Dunlap | H | Hardy Boys #004; matte blue picture cover | VG | $4.00 |
| 66123 | Missing Chums, The | 1962 | Grosset & Dunlap | H | Hardy Boys #004; matte blue picture cover Fine like new | Fine | $8.00 |
| 57941 | Missing Chums, The | 1928 | Grosset & Dunlap | H | Hardy Boys #004; tan tweed, orange eps | VG | $5.00 |
| 61004 | Missing Chums, The | 1928 | Grosset & Dunlap | H | Hardy Boys #004; tan, brown eps DJ | VG | $16.00 |
| 61006 | Hunting for Hidden Gold | 1989 | Grosset & Dunlap | H | Hardy Boys #005; blue cover | Exc | $4.00 |
| 25012 | Hunting for Hidden Gold | 1963 | Grosset & Dunlap | H | Hardy Boys #005; blue matte cover | VG | $3.50 |
| 55028 | Hunting for Hidden Gold | 1963 | Grosset & Dunlap | H | Hardy Boys #005; matte blue picture cover | VG | $3.50 |
| 22081 | Hunting for Hidden Gold | 1928 | Grosset & Dunlap | H | Hardy Boys #005; tan cover | G | $2.00 |
| 57944 | Hunting for Hidden Gold | 1928 | Grosset & Dunlap | H | Hardy Boys #005; tan tweed cover, orange eps | VG | $4.00 |
| 29303 | Hunting for Hidden Gold | 1928 | Grosset & Dunlap | H | Hardy Boys #005; tan, brown eps DJ no front flap | VG | $12.00 |
| 24477 | Hunting for Hidden Gold | 1928 | Grosset & Dunlap | H | Hardy Boys #005; tan, orange eps | VG | $4.00 |
| 22238 | Shore Road Mystery, The | 1992 | Grosset & Dunlap | H | Hardy Boys #006; glossy blue cover | Exc | $4.00 |
| 49293 | Shore Road Mystery, The | 1964 | Grosset & Dunlap | H | Hardy Boys #006; matte blue picture cover | VG | $4.00 |
| 57945 | Shore Road Mystery, The | 1964 | Grosset & Dunlap | H | Hardy Boys #006; tan tweed cover; orange eps | VG | $5.00 |
| 36320 | Secret of the Caves, The | 1992 | Grosset & Dunlap | H | Hardy Boys #007; glossy blue cover | Exc | $4.00 |
| 71587 | Secret of the Caves, The | 1964 | Grosset & Dunlap | H | Hardy Boys #007; matte blue brown eps | Exc | $6.00 |
| 55029 | Secret of the Caves, The | 1964 | Grosset & Dunlap | H | Hardy Boys #007; matte blue picture cover | VG | $3.00 |
| 61007 | Secret of the Caves, The | 1964 | Grosset & Dunlap | H | Hardy Boys #007; matte blue picture cover | Exc | $5.00 |
| 61008 | Mystery of Cabin Island, The | 1966 | Grosset & Dunlap | H | Hardy Boys #008; blue glossy picture cover | VG | $4.00 |
| 46917 | Mystery of Cabin Island, The | 1966 | Grosset & Dunlap | H | Hardy Boys #008; blue glossy picture cover | Exc | $4.00 |
| 29241 | Mystery of Cabin Island, The | 1966 | Grosset & Dunlap | H | Hardy Boys #008; blue matte picture cover | Exc | $5.00 |
| 69067 | Mystery of Cabin Island, The | 1966 | Grosset & Dunlap | H | Hardy Boys #008; blue matte picture cover Fine | Exc | $6.00 |
| 57950 | Mystery of Cabin Island, The | 1929 | Grosset & Dunlap | H | Hardy Boys #008; tan tweed wrap around DJ | Exc | $24.00 |
| 49902 | Mystery of Cabin Island, The | 1929 | Grosset & Dunlap | H | Hardy Boys #008; tan tweed; orange eps; yellow spine DJ | VG | $20.00 |
| 67900 | Great Airport Mystery, The | 1930 | Grosset & Dunlap | H | Hardy Boys #009 brown cloth 1st ed Frontispiece Rogers illus | VG | $50.00 |
| 30255 | What Happened at Midnight | 1967 | Grosset & Dunlap | H | Hardy Boys #010; blue matte cover | VG | $4.00 |
| 61010 | What Happened at Midnight | 1931 | Grosset & Dunlap | H | Hardy Boys #010; brown cover; orange eps DJ thick ed | VG | $18.00 |
| 49476 | What Happened at Midnight | 1931 | Grosset & Dunlap | H | Hardy Boys #010; brown, orange eps | VG | $12.00 |
| 51170 | What Happened at Midnight | 1931 | Grosset & Dunlap | H | Hardy Boys #010; brown, orange eps | Exc | $20.00 |
| 55030 | What Happened at Midnight | 1967 | Grosset & Dunlap | H | Hardy Boys #010; matte blue picture cover | Exc | $5.00 |
| 48610 | What Happened at Midnight | 1931 | Grosset & Dunlap | H | Hardy Boys #010; tan tweed cover; orange eps DJ | VG | $16.00 |
| 61005 | What Happened at Midnight | 1931 | Grosset & Dunlap | H | Hardy Boys #010; tan tweed cover; orange eps DJ | VG | $25.00 |
| 49294 | While the Clock Ticked | 1932 | Grosset & Dunlap | H | Hardy Boys #011; matte blue picture cover | Exc | $5.00 |
| 22225 | Footprints Under the Window | 1933 | Grosset & Dunlap | H | Hardy Boys #012; blue cover brown eps | G | $2.50 |
| 61009 | Footprints Under the Window | 1989 | Grosset & Dunlap | H | Hardy Boys #012; blue glossy picture cover | Exc | $5.00 |
| 55031 | Footprints Under the Window | 1965 | Grosset & Dunlap | H | Hardy Boys #012; matte blue picture cover | VG | $4.00 |
| 69068 | Mark on the Door, The | 1967 | Grosset & Dunlap | H | Hardy Boys #013; blue matte picture cover Fine | Exc | $6.00 |
| 55032 | Mark on the Door, The | 1967 | Grosset & Dunlap | H | Hardy Boys #013; matte blue picture cover | Exc | $5.00 |
| 57948 | Mark on the Door, The | 1934 | Grosset & Dunlap | H | Hardy Boys #013; tan tweed; brown multi-pic eps | VG | $4.00 |
| 45400 | Hidden Harbor Mystery, The | 1935 | Grosset & Dunlap | H | Hardy Boys #014 DJ brown tweed, pic eps | Exc | $20.00 |
| 69070 | Sinister Sign Post, The | 1968 | Grosset & Dunlap | H | Hardy Boys #015; blue matte picture cover | VG | $4.00 |
| 24153 | Figure in Hiding, A | 1965 | Grosset & Dunlap | H | Hardy Boys #016; blue matte picture cover | Exc | $5.00 |
| 51310 | Figure in Hiding, A | 1937 | Grosset & Dunlap | H | Hardy Boys #016; DJ tan, brown multi-pic eps | Exc | $18.00 |
| 69071 | Secret Warning, The | 2000 | Grosset & Dunlap | H | Hardy Boys #017; blue matte picture cover | VG | $5.00 |
| 36430 | Secret Warning, The | 2000 | Grosset & Dunlap | H | Hardy Boys #017; blue picture cover | Exc | $6.00 |
| 36814 | Twisted Claw, The | 1969 | Grosset & Dunlap | H | Hardy Boys #018; blue matte picture cove | VG | $5.00 |
| 49295 | Twisted Claw, The | 1939 | Grosset & Dunlap | H | Hardy Boys #018; matte blue cover brown pic eps | VG | $6.00 |
| 24217 | Disappearing Floor, The | 1964 | Grosset & Dunlap | H | Hardy Boys #019; blue matte picture cover | VG | $4.00 |
| 74220 | House on the Cliff, The | 1991 | Applewood | H | Hardy Boys #02 reissue original DJ Fine red cover 1st ptg | Exc | $12.00 |
| 24218 | Mystery of the Flying Express | 1970 | Grosset & Dunlap | H | Hardy Boys #020; blue matte picture cover | Exc | $5.00 |
| 24219 | Clue of the Broken Blade, The | 1970 | Grosset & Dunlap | H | Hardy Boys #021; blue matte picture cover | Exc | $5.00 |
| 69072 | Flickering Torch Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #022; blue matte picture cover | Exc | $5.00 |
| 55033 | Flickering Torch Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #022; matte blue picture cover | Exc | $5.00 |
| 34810 | Melted Coins, The | 2001 | Grosset & Dunlap | H | Hardy Boys #023; blue cover | Exc | $4.00 |
| 24325 | Melted Coins, The | 1970 | Grosset & Dunlap | H | Hardy Boys #023; blue picture cover | Exc | $5.00 |
| 49350 | Melted Coins, The | 1944 | Grosset & Dunlap | H | Hardy Boys #023; DJ brown tweed orange eps | VG | $20.00 |
| 55034 | Melted Coins, The | 1970 | Grosset & Dunlap | H | Hardy Boys #023; matte blue picture cover | VG | $4.00 |
| 69073 | Short-wave Mystery, The | 1966 | Grosset & Dunlap | H | Hardy Boys #024; blue matte picture cover Fine | Exc | $6.00 |
| 55035 | Secret Panel, The | 1969 | Grosset & Dunlap | H | Hardy Boys #025; matte blue picture cover | VG | $4.00 |
| 24162 | Secret Panel, The | 1946 | Grosset & Dunlap | H | Hardy Boys #025; tan tweed, brown eps DJ | VG | $14.00 |
| 17959 | Secret Panel, The | 1946 | Grosset & Dunlap | H | Hardy Boys #025; tan, orange eps | VG | $5.00 |
| 45715 | Phantom Freighter, The | 1998 | Grosset & Dunlap | H | Hardy Boys #026 glossy blue picture cover | Exc | $4.00 |
| 40212 | Phantom Freighter, The | 1970 | Grosset & Dunlap | H | Hardy Boys #026; blue cover | Exc | $5.00 |
| 21721 | Phantom Freighter, The | 1970 | Grosset & Dunlap | H | Hardy Boys #026; blue matte picture cover | Exc | $5.00 |
| 27801 | Phantom Freighter, The | 1996 | Grosset & Dunlap | H | Hardy Boys #026; blue picture cover | Exc | $4.00 |
| 45716 | Secret of Skull Mountain, The | 1998 | Grosset & Dunlap | H | Hardy Boys #027 glossy blue picture cover | Exc | $5.00 |
| 24154 | Secret of Skull Mountain, The | 1966 | Grosset & Dunlap | H | Hardy Boys #027; blue matte picture cover | Exc | $5.00 |
| 27802 | Secret of Skull Mountain, The | 1996 | Grosset & Dunlap | H | Hardy Boys #027; blue picture cover | Exc | $4.00 |
| 22083 | Secret of Skull Mountain, The | 1966 | Grosset & Dunlap | H | Hardy Boys #027; matte blue picture cover | VG | $4.00 |
| 22077 | Sign of the Crooked Arrow, The | 1949 | Grosset & Dunlap | H | Hardy Boys #028 | VG | $8.00 |
| 27803 | Sign of the Crooked Arrow, The | 1996 | Grosset & Dunlap | H | Hardy Boys #028; blue picture cover | Exc | $4.00 |
| 49300 | Sign of the Crooked Arrow, The | 1949 | Grosset & Dunlap | H | Hardy Boys #028; brown, DJ tweed, orange eps | VG | $18.00 |
| 67901 | Sign of the Crooked Arrow, The | 1949 | Grosset & Dunlap | H | Hardy Boys #028; brown, orange eps early ptg | VG | $10.00 |
| 55036 | Sign of the Crooked Arrow, The | 1970 | Grosset & Dunlap | H | Hardy Boys #028; matte blue picture cover | Exc | $5.00 |
| 24159 | Secret of the Lost Tunnel, The | 1968 | Grosset & Dunlap | H | Hardy Boys #029; blue matte picture cover | VG | $4.00 |
| 24326 | Secret of the Lost Tunnel, The | 1968 | Grosset & Dunlap | H | Hardy Boys #029; blue picture cover | Exc | $5.00 |
| 27804 | Secret of the Lost Tunnel, The | 1996 | Grosset & Dunlap | H | Hardy Boys #029; blue picture cover | Exc | $4.00 |
| 45717 | Wailing Siren Mystery, The | 2000 | Grosset & Dunlap | H | Hardy Boys #030 glossy blue picture cover | Exc | $4.00 |
| 69075 | Wailing Siren Mystery, The | 1968 | Grosset & Dunlap | H | Hardy Boys #030; blue matte picture cover Fine | Exc | $6.00 |
| 27805 | Wailing Siren Mystery, The | 1996 | Grosset & Dunlap | H | Hardy Boys #030; blue picture cover | Exc | $5.00 |
| 37410 | Wailing Siren Mystery, The | 1996 | Grosset & Dunlap | H | Hardy Boys #030; blue picture cover | Exc | $5.00 |
| 45718 | Secret of Wildcat Swamp, The | 1992 | Grosset & Dunlap | H | Hardy Boys #031 glossy blue picture cover | Exc | $4.00 |
| 21722 | Secret of Wildcat Swamp, The | 1969 | Grosset & Dunlap | H | Hardy Boys #031; blue matte picture cover | VG | $4.00 |
| 22080 | Secret of Wildcat Swamp, The | 1952 | Grosset & Dunlap | H | Hardy Boys #031; DJ; tan cloth | VG | $20.00 |
| 70329 | Crisscross Shadow, The | 1969 | Grosset & Dunlap | H | Hardy Boys #032; blue matte picture cover | Exc | $6.00 |
| 69076 | Crisscross Shadow, The | 1969 | Grosset & Dunlap | H | Hardy Boys #032; blue matte picture cover Fine | Exc | $6.00 |
| 47150 | Crisscross Shadow, The | 1953 | Grosset & Dunlap | H | Hardy Boys #032; tan, orange eps DJ | Exc | $20.00 |
| 49440 | Crisscross Shadow, The | 1953 | Grosset & Dunlap | H | Hardy Boys #032; tan, orange eps DJ | VG | $18.00 |
| 70330 | Yellow Feather Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #033; blue matte picture cover | Exc | $6.00 |
| 69077 | Yellow Feather Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #033; blue matte picture cover | Exc | $5.00 |
| 49360 | Yellow Feather Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #033; DJ brown tweed orange eps | Exc | $20.00 |
| 50700 | Yellow Feather Mystery, The | 1953 | Grosset & Dunlap | H | Hardy Boys #033; DJ tweed brown multi-pic eps | VG | $18.00 |
| 31220 | Hooded Hawk Mystery, The | 1954 | Grosset & Dunlap | H | Hardy Boys #034; blue, brown eps | VG | $8.00 |
| 49296 | Hooded Hawk Mystery, The | 1971 | Grosset & Dunlap | H | Hardy Boys #034; matte blue picture cover Fine | Exc | $6.00 |
| 74962 | Hooded Hawk Mystery, The | 1954 | Grosset & Dunlap | H | Hardy Boys #034; tan tweed brown eps | Exc | $10.00 |
| 57955 | Hooded Hawk Mystery, The | 1954 | Grosset & Dunlap | H | Hardy Boys #034; tan tweed, orange eps DJ missing front flap | VG | $12.00 |
| 51570 | Hooded Hawk Mystery, The | 1954 | Grosset & Dunlap |