https://collections.galtmuseum.com/link/descriptions64660
Inspection and License Department Series: Cooper Block - Collections - Galt Museum and Archives
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https://www.scottelectricusa.com/online-store/product/cooper-bussmann-rm60030-1cr-1-pole-30-amp-600-volt-class-r-fuse-block-box-lug-terminal/486328
Cooper Bussmann RM60030-1CR 1-Pole 30 Amp 600 Volt Class R Fuse Block Box Lug Terminal
Cooper Bussmann RM60030-1CR 1-Pole 30 Amp 600 Volt Class R Fuse Block Box Lug Terminal for sale at Scott Electric in Greensburg, PA, Item Number: 486328
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