The 21st Century Crossword Puzzle Dictionary
The Million Word Crossword Answer Book
Merriam-Webster's Crossword Puzzle Dictionary
Solving Cryptic Crosswords For Dummies
Collins Bradford’s Crossword Solver’s Lists
The World Almanac and Book of Facts 2019
The Official SCRABBLE Players Dictionary, Sixth Edition
The World Almanac and Book of Facts 2020
Merriam-Webster's Dictionary and Thesaurus