Full name from an application for Sons of the American Revolution found on findagrave.com 77996897, which gives detailed information about several generations of the Vernon family.
Posed around the mantle, showing various framed prints, figurines, a clock, a dolls head, and what appears to be a mourning corsage. His wife, the former Blanche E. Knight, is also in the photo, and along with his son, Thomas R. Vernon, Jr. and his daughter Jane. Information from 1. an application for Sons of the American Revolution found on findagrave.com 77996897, which gives detailed information about several generations of the Vernon family, and 2. Chester Times article, August 23, 1934, page 4, about Jane's divorce.
"Charter House Livery and Boarding Stables" are in the background. Full name from an application for Sons of the American Revolution found on findagrave.com 77996897, which gives detailed information about several generations of the Vernon family.
Copy of survey showing about 10 acres of property of Thomas V. Cooper in Philadelphia near Oxford Ave. and Horrocks St. (formerly Oxford Turnpike and Elbow Lane), adjacent to Roosevelt Boulevard. Plan created by William E. Skyrm, drarughtsman, 1904, Philadelphia.
Party seems to be for the older woman (grandmother of the small children) at the center. Her daughter is likely standing behind her. There are several obvious sibling pairs, especially the girl on the far right and the boy standing second to the left of her, with the bow at his neck. The fathers of these broods (one would assume there are several families represented) are missing.