Bill Tracy functioned mainly as a designer and sales representative for ADA. He illustrated the concepts and his staff built the figures and fronts.
Above: Tracy's dark ride facade design for Belmont Park, Montreal.
Left: ride diagram proposal for Waldameer Park, Erie, PA.
 
Above left: Tracy's drawing for the re-designed facade of the funhouse at Canobie Lake Park, Salem, NH.
Top right: The existing funhouse, built by Philadelphia Toboggan Co. in the late 1930s.
Bottom right: Same building with Tracy's House Of Seven Gables front installed.
  
In the late 1960s, New Jersey's Palisades Park re-themed its Pretzel Tunnel Of Love dark ride to Casper's Ghostland. Although it bears the stamp of "This Is, Inc.", this illustration was done by Tracy and the project was completed by Amusement Display.