I was wondering if anyone had any information on this photographer as I have recently received many old steam photos from someone who found them in the atic of a house they purchased. Many of the photos have a stamp on the back reading "Please Credit Union Pacific Railroad Photo." Only one of the photos have a stamp on in that has an address for H.L. Kelso on it along with a written location and date which are somewhat faded but can tell that it was taken at Cajon, Ca 9/28/4?. (Scan of this photo below) Any information is appreciated as I'm looking to possibly sell these photos or donate them somewhere if they are of some type of historical significance.