Although no markings on the these two camping photo cards, I believe they are from Southern California / Los Angeles area. I had purchased several other photos which were marked downtown Los Angeles, so I don't doubt the camping photos were taken in the mountains surrounding Los Angeles.
I find the camp site interesting with one couple holding china cups and saucers...no plastic or paper here! Now this group of people look to be having a good time. I also noticed one of the tents is labeled Property Of Horst Bros. Maybe that's a clue? The photo cards measure 9" x 11", including the black border. Actual photograph is 6" x 8".
Condition is good with a bit of paper loss from the edge of black border. The back of one card has some paper loss dots. Nothing to the front of photo.
Sold as a pair.