The Old Mentz Heritage Center is the historical society for the towns of Mentz and Montezuma, and the village of Port Byron, NY
by Old Mentz | Jan 24, 2014 | Port Byron, Port Byron Telephone Company, Weston
Here we have two versions of the same photo. The number on the calendar is the same, so likely this was taken on the same day. As the photo caption states, CW Weston was the founder of the PB Telephone Company.