In a publication called "Moore's Rural New-Yorker" is a cleaning ad that reads:
"REMOVING IRON RUST—Somebody's wife asks how to take iron rust out, and I will give my way. I choose the warmest and sunniest day, and dip the spot in lemon juice, then dry in the sun. I have always succeeded thus without damaging the article. Some dilute oil vitriol, but as that is injurious, I have never tried it.
MARY, Port Byron, N. Y, 1864"
Note: Oil of Vitriol is also known as sulfuric Acid. Smart move Mary!
