Hy-Rock Beverages / St. Louis, Missouri

Pic. # 1 shows a 7 oz. Hy-Rock Beverage bottle that dates to 1936
Pic. # 2 shows a 7 oz. Moore bottle dated 1943. Note that the design of the bottle is the exact same on both bottles, yet the name is different. I am guessing this design was used for many different bottling companies. The glass maker was the Obear Nester Glass Co. of East St. Louis, Illinois
Pic. #3 shows a Hy-Rock seltzer that has the Moore Brothers listed along with the Hy-Rock Beverage Co. Bottle dates 1936.
Pic. #4 is a 7 0z. Kist dated 1937. Hy-Rock Beverage Co. is on the bottom of the bottle. (not shown).

I found a Hy-Rock ad wanting a salesman in 1933 at a location of 2812 Accomac in St. Louis. At the time this was the address of the American Soda Water Co. In December of 1935 I find an ad for a Prosperous 1935 from Moore Bros. Hy-Rock Beverage Co. Address at 4141 Minnesota. In 1936 I find an ad with Hy-Rock only listed at 3301 S. Broadway. Another ad in 1937 for a Happy New Year and thats all I can dig up for Hy-Rock