Sakz Tannery was still a horse-and-cart operation, with old Pop Anecito leading his horse across River Street eight times a day. (Ross Eric Gibson collection)

Leather press to flatten the hides and given them their distinctive shine. (Ross Eric Gibson collection)

Ace Leather Goods of Los Angeles produced products with the prestigious Salz California Saddle Leather brand. (Public domain)

This drum tanning vat has blunt teeth inside to soften and fully saturate the hides. (Ross Eric Gibson collection)

Show Caption 1 of 4 Sakz Tannery was still a horse-and-cart operation, with old Pop Anecito leading his horse across River Street eight times a day. (Ross Eric Gibson collection) Expand

Labor Day started in New York in 1882 and was first celebrated in California in 1892, two years

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