Envelope identifying "Marathon Hills Agreement", undated

The Marathon Hills Agreement consists of a 5-page legal document outlining the business partnership of 10 individuals in developing a plat that would later be known as the Marathon Hills development, in Section 20 of Harrison Township, near Marathon Avenue just east of Salem Avenue. Although the term "Marathon Hills" does not appear in the document itself, it is written on the envelope in which the document was received, and it can be found in newspaper articles of the era describing the same property development.