How many books did Gertrude Stein write?

Gertrude Stein wrote a lot of books, but it's difficult to give an exact number because some are considered collections of essays, plays, and poems, while others are novels or autobiographical works.

Here's a breakdown:

* Published books: Over 40 books were published during her lifetime, including novels, plays, essays, poetry, and autobiographical works.

* Unpublished works: There are also many unpublished writings, including manuscripts, notebooks, and letters.

Here are some of her most well-known works:

* The Making of Americans (1925)

* Three Lives (1909)

* Tender Buttons (1914)

* The Autobiography of Alice B. Toklas (1933)

* Four Saints in Three Acts (1934)

It's safe to say that Gertrude Stein was a prolific writer with a large body of work.