Note of March 2018: a reader has identified the automobile as a 1914 Hudson Model 6-40 Roadster - see the comments section.
Photograph, approximately 4-1/2" by nearly 3", of a woman identified on reverse as Mrs. Stephen D. Bartlett, on the running board of antique automobile.
She was presumably Jessie (Cummings) Bartlett, whose husband, Stephen Drew Bartlett, is featured in another post, with what appears to be the same automobile. See that post for more information on Mr. and Mrs. Bartlett.
The license plate, enlarged:
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