Marx Realty was one of Mobile's oldest real estate businesses. Founded in 1927 by Julius E. Marx, the company handled residential and commercial properties. The images in the collection date from 1927 to 1985 and are primarily made up of structures and street scenes. Since buildings can be located by block and lot number, the collection is particularly useful to architectural researchers. Local homeowners wanting to document architectural changes to their homes have also found the collection helpful.