I have a letter written to my great aunt from 1961, it is on the Stansbury Society letterhead but the only thing that comes close to an address is the signature at the bottom.
Mrs. Edith (Stansbury) Dallam Pen-y-Bryn Sandy Springs, Maryland
I believe Mrs Dallam donated all the Society's data to the Baltimore County Historical Society.
My Stansbury ancestor is Elizabeth Stansbury daughter of William who married William Bosley in 1801. They are buried at Stella Maris formerly Long Crandon, with William Stansbury and William Stansbury's parents Hannah Gorsuch Stansbury and Thomas Stansbury Jr.