Sterling's 1st book inscribed by Jack London

Heading: (London, Jack)
Author: Sterling, George
Title: The Testimony of the Suns and Other Poems
Place Published: San Francisco
Publisher:A.M. Robertson
Date Published: 1904
Description:

142 pp. Black cloth lettered in gilt. Second Edition.

Inscribed and signed by Jack London on the front free endpaper, "Dear Constance - a man whose shoestrings we are not worthy to tie. Jack London, Jan. 19, 1915." The recipient is apparently Constance Crawley, for whom the poem on p.37 of the book is named, "To Miss Constance Crawley in 'Everyman.'" George Sterling's first book, first published the preceding year.
Condition Report: Rubbing and wear to covers, front hinge cracked; good to very good.