Puzzles to Keep You Sharp (PUZZLES to Keep you SHARP, 4 Book in 1!)Mark Danna, Henry Hook, Harvey Estes, Olivia Carlton, Bob Klahn, Fred Piscop & Mel Rosen · First published 2004Open the Tome
Big Book of Crossword PuzzlesOlivia Carlton, J. Baxter Newgate, Emily Cox, Henry Rathvon · First published 2002Open the Tome
Crosswords for a Super Brain WorkoutEmily Cox, Henry Rathvon, Olivia Carlton · First published 2002Open the Tome
