On "Friends", what first edition book did Chandler buy Joey's girlfriend?

On Friends, Chandler bought Joey’s girlfriend Kathy a first edition of The Velveteen Rabbit. The gift appears in season four’s “The One with the Dirty Girl,” when Chandler is secretly in love with Kathy even though she is dating Joey.

Chandler goes to considerable effort to find the rare book because it was Kathy’s favorite childhood story. Joey initially has no meaningful birthday present in mind, so Chandler worries that his thoughtful and expensive gift will make Joey look bad. To solve the problem, Chandler lets Joey give Kathy the book while Chandler gives her Joey’s much cheaper pen-and-clock gift.

The plan does not hide Chandler’s feelings for long. Kathy realizes that Chandler was the person who chose the book, and the present becomes another sign of the emotional tension in the friends’ complicated love triangle. The Velveteen Rabbit, written by Margery Williams and illustrated by William Nicholson, was first published in 1922. A later Friends episode also identifies it as Chandler’s favorite childhood book, creating a memorable continuity connection—or possible coincidence.