Above is a vintage postcard of the outside of Fort Firelands. The back of the postcard reads, "FORT FIRELANDS at the juncture of Routes 163 and 269 near East Harbor State Park is an authentic reproduction of 18th Century Forts. There are Military, Pioneer and Indian Museums, Burial Grounds and Relics. Antiques, military accouterments, souvenir Indian items, etc. are offered at the Trading Post."
Here's another postcard view of the outside from a slightly different angle.
And here's a view from the inside.The back of the postcard reads, "Interior view of the Fort showing the main entrance. These Forts for the most part were built by the early settlers for defense against the savage tribes, and had the same basic design. Fort Firelands has a fine Military and Indian Museum, Trading Post, Country Store, "Westward Ho" Restaurant, Gun Smith and Armory with a gun collection dating back to the era of the Fort with many of the pieces for sale.
Anyway, by 1972 there were big changes taking place at Fort Firelands. The article below, which appeared in the Journal on August 6, 1972, explains how the new owners were in the process of converting the Fort into a summer resort. They added a swimming pool, campsites, a fish pond, a stage & outdoor theater, and efficiency apartments in house trailers.
As the article notes, the original Fort Firelands tourist attraction itself was now "a free admission place with the historical displays plus gift and craft shops, a restaurant and an arcade."Here's a souvenir pennant of the "new" Fort Firelands.
Today, Fort Firelands is an RV Park. Its website includes a page with some vintage postcards.