I can’t tell you who this stylish couple is. I can’t tell you where they lived, but I can tell you when the photos were taken, within a 4-year period – 1903 to 1907.
The paper these real photo post cards are printed on is an Ansco product called Cyko. The process of the printing is chlorobromide, yielding a warm brown tone. Cyko came on the market in 1903 and the undivided-back era ended in 1907, when the Universal Postal Conference agreed to allow a message area on the left side of the back, not just the address. There’s probably a little slippage on the end date, since, as far as I can tell, the U.S. Post Office didn’t ban these backs, just let them fall out of favor.
The blank area to the right of each picture was there for a message of some sort. These are either one-offs or part of a very limited edition.
Uncle Bob's Pix 