[W.K. Vanderbilt's entrance gateway, 666 5th Avenue.]
666 5th Avenue. W.K. [William Kissam] Vanderbilt, Jr. Residence.
[William H. Vanderbilt residence. 5th Avenue and 51st Street.]
[Vanderbilt's house at 5th Avenue and 57th Street.]
House of Mrs. William K. Vanderbilt.