Here I have six 1870s era stereoscope photographs. I date them to the 1870s based on the content, location and businesses listed on the back of three of the stereoscopes. The content is:
Short and Sweet - Couple kissing with a sign in the back that reads Man Traps. Advertising for Philadelphia businesses on the back
Rejected - Couple standing near a fence. Not sure which one was rejected. Assuming the goofy looking guy. Advertising on the back
Liberty Bell - Advertising on back
Fairmont Park Philadelphia - Group of people picnicking
Centennial 1876 Freedom Peace and Prosperity monument
Statue of some dude, maybe a leprechaun