The front of the photograph is unmarked. The back suggests that the occupants of the automobile are "CAL VADER + WIFE."

If this is Calvin S. Vader, the photo would pre-date his death in 1915. Vader was a Civil War veteran, born in 1842 in Canada. His second wife was Sarah Catherine (Prouty) Holdsworth (1845-1928).

Presently, I am not convinced this is Mr. and Mrs. Calvin Vader.

Letitia Pfeiffer.  An Ebay purchase, was surprised to see her name written on the back because it wasn't mentioned in the description. Written on the front is "Bradshaw Traverse City Mich." in pencil, perhaps indicating that this was an early photograph by that studio, before he had obtained matting stock with his name stamped on it. Albert John Bradshaw operated his studio in Traverse City from 1895 to 1899.

Letitia Pfeiffer, circa 1895-1899.