This is the family of Emory Auterbridge Harper, son of Carl Franklin Harper & Frances Wert Lambert. Here's how would ID the people listed on the back of the photo:
Bill: James William Harper, b. 17 Dec 1927 in Guilford Co., NC
Lucille: Lucille M. Harper, b. 20 Mar 1918 in Rowan Co., NC. She married someone named Tillet. (Did not know she had a son, Bobbie.)
Edith: Emory's wife, Edith Bell Stream, dau of John Henry Stream & Nannie Gertrude Wenner. Edith b. 02 Apr 1894 in Loudoun; d. 16 May 1960 in Greensboro, Guilford Co., NC.
Myself: Emory Auterbridge Harper, b. 14 Jan 1894 in Lucketts; d. 13 Jan 1961 in Greensboro.
My other two boy in Maryland Army...
Floyd: Floyd Franklin Harper, b. 28 Apr 1916 in NC
Jr.: Emory Auterbridge Harper, Jr., b. 04 Feb 1920 in Manassas, Prince William Co., VA
The "my mom's brother" was probably written by one of the children of Ursulla May Harper, Agnes, Mildred, or Basil Brown; since Emory was her brother.
Hope this is of help,