Of possible interest to some of you. https://blogs.loc.gov/preservation/2021/06/assessing-the-impact-of-sanitizing-products-on-collection-items/ Assessing the Impact of Sanitizing Products on Collection Items [Guardians of Memory: Preserving the National Collection] ................................................................ Library Link of the Day http://www.tk421.net/librarylink/ (archive, rss, subscribe options) -- Mark Arend Oshkosh, Wisc. Outside of a dog, a book is man's best friend. Inside of a dog it's too dark to read. --Groucho Marx