Fact-filled reference books

This crossword clue is for the definition: Fact-filled reference books.
it’s A 27 letters crossword puzzle definition.
Next time, when searching for online help with your puzzle, try using the search term “Fact-filled reference books crossword” or “Fact-filled reference books crossword clue”. The possible answerss for Fact-filled reference books are listed below.

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Possible Answers: ALMANACS.

Last seen on: Daily Boston Globe Crossword Saturday, February 18, 2023