Tea and Coffee Stains
Only a few people know that butter will remove tea, coffee or fruit stains. It should be rubbed on the linen or cotton and then the material should be soaked in hot water and a mild soap. In fact, any stains, except ink or wine stains, sprinkle salt over the spots and pour boiling water through it until the spot has gone.
Source: 1001 Household Hints, Ottilie V. Ames
To Take Ink out of Linen
Dip the ink spot in pure melted tallow, then wash out the tallow and the ink will come out with it. This is said to be unfailing. Milk will remove ink from linen or colored muslins, when acids would be ruinous, by soaking the goods until the spot is very faint and then rubbing and rinsing in cold water.
Source: The White House Cookbook, F.L. Gillette
Mildew
Equal parts of lemon juice, salt, powdered starch, and soft soap ; rub on thickly, and lay on the grass in the hot sun ; repeat this process two or three times a day.
Source: The Unrivalled Cook-Book and Housekeeper’s Guide, Mrs Washington