We recently came across this vintage tin of Sanford's Ink Eraser and couldn't pass up the opportunity to share some photos. It dates to 1900-1910, and was one of the first products marketed to remove ink.
The bottle lids were numbered 1 and 2. The bottles themselves were imprinted with First and Second, and molded so as to only fit in the tin in the correct order. Directions on the tin:
For Paper - First apply No. 1, rubbing gently until the ink has softened, then blot off and apply No. 2 until the ink has disappeared, then apply No. 1 again until the two fluids are neutralized and dry with a blotter.
For Clothing - Use equal parts of Nos. 1 and 2 and absorb with a clean, damp sponge.
Here's an advertisement for them from the February 24, 1900 issue of The American Stationer. You can read more about Sanford on the Made in Chicago Museum website.