A photo paper postcard, contact printed on real paper and processed in a darkroom. Turn of the century. El Capitan from the East side in morning light at Yosemite. Ebay. Never mailed.
1928 postmark on a faded photocard of Half Dome. The stamp must have been a 2 cent, at most. On the other side the writer describes staying at the long since gone hotel that was on Glacier Point.
This was tricky printing. They had to copy and reduce the images, then tape it all up for contact printing. Notice how small the writing is. There are probably individual cards of all these shots with larger images.
IMHO, photographers must know and love, photographs.