The New York Times, October 5, 1912. W. Barnum Gives Bachelor Dinner.
Walter Barnum, son of Mr. and Mrs. William M. Barnum of this city, who is to marry Miss Rowena Stewart, daughter of Mr. and Mrs. Charles A. Stewart of San Francisco, Cal., on Thursday at the home of Dr. Walter D. Buchanan, 54 East Fiftieth Street, gave his bachelor dinner last night at Delmonico's. His guests were Henry T. Curtiss, Richard K. Hawes, Lyman Hine, J. Ford Johnson, Jr., Reginald Roome, Rufus Tucker, Edward M. Richardson, Douglas Gibbons, W. H. Barnum, W. Seton Henry, and Phelps Barnum.
From the NY Times of September 11, 1966: Barnum--Walter, aged 79 years, on September 7, 1966. resident of Old Lyme, Conn. Father of attorney John Barnum of NYC and Humphrey of Branford, Conn., brother of Phelps of Greenwich.