New York City
44 East 23rd Street, New York
"Successors to McClure, Phillips & Co.
--advertisement "Fall Books", NY Times
Samuel Sidney McClure
(1857–1949) had been partner in Doubleday & McClure
, 1897 to 1900, and he sold his book publishing operations to Doubleday, Page & Company
--Wikipedia (multiple articles)
At ISFDB as of October 2019, The McClure Company and McClure, Phillips are book publishers exclusively, and The S. S. McClure Co.
is a magazine publisher exclusively.