Jean L. (Jean Lyttleton) McKechnie

Jean Lyttleton McKechnie appears in library and bookseller records as both an author and an editor. Open Library lists her novel Penny Allen and the Mystery of the Hidden Treasure as first published in 1950, showing that she was active as a writer as well as in reference publishing.

She is most strongly associated with Webster’s New Twentieth Century Dictionary of the English Language, where multiple editions credit the publisher’s editorial staff as working under her general supervision. Those records suggest she played an important editorial role in shaping a widely circulated dictionary rather than being known mainly for a large body of standalone literary works.

Reliable biographical details about her life are limited in the sources I found, so a fuller personal profile is hard to confirm. Based on the available records, she is best remembered as a careful editorial figure in American reference publishing and as the named author of at least one mid-century mystery title.