How To Heat Proof And Fireproof Paper- DIY Tips And Hacks For Life - Things Useful And Curious
To Render Paper Fireproof
Whether the paper be plain, written, printed, or even marbled, stained, or painted for paper hangings, dip it in a strong solution of alum water and thoroughly dry it.
In this state it will be fireproof.
Excerpt From The Ladies Book Of Useful Information