The problem is that most people think in terms of books and papers instead of texts (as evidenced by a 30K Google return for "rare texts").
However, there is new technology aimed at reviving rare books (and text) for common access. This may give your name some ad appeal for a company marketing the out of print and delicate writings.
Plus, it sounds very professional...like a heading in the Yellow Pages.
A rare book dealer (or a restoration company) would easily pay low $xxx if you get their attention. If you get someone's attention in the new tech print-everything-ever-written field, who knows?