HDC was successful in getting the Downtown Zanesville Historic District listed in the National Register of Historic Places in 2024, but one final piece of mitigation remained outstanding: the Ohio historical marker. Ohio historical markers started in the 1950s, born from the 1953 state sesquicentennial, to document important people, places, and events, with the first marker placed in 1957 for Akron’s Portage Path, all managed by the Ohio History Connection (formerly the Ohio Historical Society) to tell community stories through Ohio-shaped signs. The program, run on an annual cycle with sponsor-funded markers, now boasts over 1,700 markers, including special ones for the Bicentennial and LGBTQ+ history, making Ohio’s past accessible.
The company that produced the first historical marker is still producing them today. In 1927, E. M. Hawes founded Sewah Studios (his name spelled backwards) in Marietta, Ohio, to create roadside signs and markers for automobile tourists. Hawes researched and developed a cast aluminum process that was lightweight, inexpensive, and corrosion resistant compared to traditional wood, bronze, or ferrous metal signs common at the time. He also sponsored a cash competition where hand lettering artists submitted designs for capital and lower case letters less than 1 inch in size, which did not exist at the time. Hawes chose a winner, made a few changes, and the Sewah script was born. Sewah’s first commission was for over 500 signs for the Ohio Revolutionary Trail Commission in 1929.
One of the original Ohio Revolutionary Trail markers, shot by Dale K. Benington, on April 6, 2010.
The distinctive Ohio-shaped marker was designed by Sewah Studios, who submitted the winning design to the historical marker committee in 1955. They received the contract to cast the first historical marker in Akron and have been producing them ever since. The process consists of hand assembling the letters and images into a pattern, which is then pressed into fine sane to create a mold. Two halves of the sand mold are then clamped together and molten aluminum is poured into the cavity. The raw casting is then sent to the finishing department who adds the colors to the sign.
The Ohio History Connection’s marker approval process simply involves approving text not to exceed a specific word count and images of a specific size. However, the City of Zanesville required graphics showing exactly what the sign would look like, so HDC traced the outline of a historical marker in AutoCAD and mocked up the text and image for both the Zoning and Building permits, which were received in November 2025. The marker application was signed soon after and we are waiting on a proposed delivery date.

Proposed historical marker Side A and Side B.