[1] He also developed and opened the Forest Park Zoological Gardens on 43 acres of land located off of North Main Street in Dayton; but this was forced to close in 1935 during the Great Depression.
As the Dayton Fun House grew in popularity, it began producing miniature trains and other gear for other amusement parks.
After World War II, it was renamed to National Amusement Devices and attracted designer John Miller.
[2] Vaszin also designed some of NAD's most popular miniature trains, including the "Century Flyer", which was used in around 100 parks.
As of 2012, the Century Flyer in Conway, Arkansas is listed in the National Register of Historic Places, due to being one of the few remaining NAD trains in operation.