SLIPPER (AKA) usg by United States Glass Company (Pittsburgh-PA, Company Operated: 1891-1962) , c1908
NOTE: Shown in a 1924 USG catalog, it was introduced much earlier.
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Shape: Novelty Shoe
Contributor: Roger Haworth

Shape: Novelty Shoe
Contributor: Julie Wilson

Shape: Novelty Shoe
Contributor: Joanne Hill