This advertisement provides images, features, and specifications for the "Type B Impenetrable" gate. The back of the flier has two illustrations, one of children being prevented from sneaking into the park, and one focusing on the ease of the gate's use.
Space City Collection
University of Alabama in Huntsville Archives and Special Collections, Huntsville, Alabama
This collection was generously loaned for digitization by Dustin Shannon. The collection is digital only.
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Perey Turnstile Company, “"Ful-Stride Roto-Gate.",” The UAH Archives and Special Collections, accessed May 30, 2023, http://libarchstor2.uah.edu/digitalcollections/items/show/1552.