In the June 5, 2018 illustration auction at Swann Auction Galleries, there is an original pen and ink illustration by Charles Dana Gibson, (1867-1944), from Life magazine:
It appeared in the September 23, 1897 issue, page 247, for a story by Louis Evan Shipman, As Told by the Girl. / In Three Conversations (1.) under the caption,”‘Yes, That’s Just it,’ she answered.” There were two later installments illustrated by different illustrators
https://babel.hathitrust.org/cgi/pt?id=uc1.c2577385;view=1up;seq=258
Shipman turned the stories into a book, Predicaments, which was published in 1899. This illustration appeared under the caption, “Sally, I’m in love,” facing page 16.