William K. Vanderbilt Costume Ball [Album title page.]
Mrs. William K. Vanderbilt (neé Alva Erskine Smith)
Mr. William Jay
Mr. [William Bayard] Cutting
Mr. William Douglas
Mrs. William Douglas (neé Adelaide Townsend)
Mr. H. Duncan Wood
Lady Mandeville (neé Consuelo Yznaga)
Mr. Thorne
Mr. Isaac Bell
[Mrs Arthur Paget (née Mary (Minnie) Paran Stevens).]
Miss Amy Townsend
Miss [Frederica] Belmont (later Mrs. S. S. Howland)
Mrs. Henry Leavitt
Mr. Pierre Mari [Peter Marie.]
Mrs. Sam Penniman (neé Mary Knower)
Mr. Allen Thorndike Rice
Mrs. Frederick Kernochan (neé Elsie Lawrence Howland)
Mr. F. H. (Frederick Harrison) Baldwin
Mrs. E. J. Woolsey (neé Fanny Smythe)