In the Caterpillar Times, Vol. 35, No. 11, pg. 5 (a promotional magazine of the Caterpillar Tractor Company available on Google Books named Caterpillar Times, Volumes 35-37) in November 1915, there is what appears to be another image, but at a different angle, of this same engraving printed in the issue. The caption there reads "The biggest load ever pulled into El Rico, Calif. Outfit of the El Rico Land Company. Total load - 55 tons, 1300 pounds." There is not much information on the El Rico Land Company, but they appear to have been an investment company/ land colonization company based in San Francisco which purchased land in and around the San Fernando Valley, specially El Rico, CA, in order to encourage people to move there and farm it.San Francisco, CA: El Rico Land Company, 11-Dec-19. A letter to a Mr. Peter Goettsch of Nicolaus, CA, regarding payment of his dividends in the El Rico Land Company. Originally enclosed with this letter was check for $400. The letter is on a specialized letterhead, meant for exactly this type of correspondence. The majority of the letter is preprinted with blank sections in order to fill in the date, check number and amount. The letter is signed by the company's secretary, A. W. Sutton. In the background of the letter is a blue screened image from a photograph depicting a single Caterpillar Tractor pulling four large trailers behind it, filled with what appears to be sacks of grain. Single page letter with corresponding envelope. Measures 8 1/2" x 5 1/2" (letter), 6" x 3 1/2" (envelope). General wear and soiling. Letter folds. Minor penciling on envelope.