Thanks to reader Andrea for sharing this awesome source for retro-style mosaic slate flooring — 10 designs in all from Sheldon Slate Products of Monson, Maine — in business for 100 years — yes, since 1917 — owned and operated by the same family. What a wonderful resource!
Random slate flooring like this seems to have been super popular used in entryways of homes, and I recall seeing it used in three-season rooms. I love the random colored varieties in particular. So far, I’d only found one other source. Gorgeous stuff that will last forever!
There are several more mosaic patterns shown on the company website: