So... I flipped the page in my album to see what the next set of post cards will be; surprise! we're still in the Royal Gorge. These two cards are a close-up of the Hanging Bridge - about which I know I have posted in the past (see earlier today).
I kept both of them not because one of them is more yellow than the other (although that could be an indicator of a different print run - not just poor storage) but because they are actually from different print runs. Everything on the front is exactly the same (except the yellow hue); but, when you turn them over there is a very clear indicator that they are not from the same print run.
The other indicator that these are two print runs is that the name of the publisher, Curt Otto Teich and his patented printing process ("C.T. Art-Colortone")are each printed in the opposite direction on the two cards.
Who is the publisher? you ask. The Deseret Book Company is the official printer and distributor of the Mormon Church print material. The Deseret Book Company is the result of a merger between the Deseret News Bookstore and the Deseret Sunday School Union Bookstore in 1919 and formally adopted its name in 1920. They can both trace their organizational roots to George Q. Cannon, a Latter-day Saint General Authority. The bookstore is named after "deseret," a word from the Book of Mormon meaning "honeybee".