Are There Rare Prentice Mulford Letters Or Unpublished Manuscripts?

Oh man, this is such a fun little bibliophile rabbit hole — Prentice Mulford has that mysterious late-19th-century vibe where a few well-known essays get reprinted over and over, but bits of private correspondence and stray manuscripts sometimes pop up like buried treasure. From what I’ve dug up over the years, there are indeed rare letters and some unpublished fragments attributed to him, but they’re scattered: tucked into special collections, sold at rare-book auctions, or preserved as single items in university archives rather than in one tidy, comprehensive repository. That scattered nature is part of the charm — and the frustration — if you’re trying to piece together lesser-known material beyond the familiar collections like the anthologies of his essays and the popular pamphlets 'Your Forces and How to Use Them' and the oft-cited 'Thoughts Are Things'.

If you want to actually track these down, start with the research tools I habitually use when chasing 19th-century writers. Run searches on WorldCat and ArchiveGrid for “Prentice Mulford” plus keywords like "papers," "correspondence," or "manuscripts"; those will show holdings in libraries and archives that might not be obvious. The Library of Congress and state historical societies sometimes have single letters or notes. HathiTrust and Internet Archive are great for digitized editions and often include editorial footnotes that hint at where unpublished material was sourced. Don’t forget periodical databases: many of Mulford’s pieces originally appeared in periodicals and the editorial correspondence surrounding those publications can include interesting drafts or replies. Auction houses and rare-book dealers are another path — I’ve seen individual Mulford letters pop up at niche sales, and auction catalogs are surprisingly useful indexes for obscure items (search past lots on sites like Invaluable or Heritage). If something turns up that you can’t visit in person, archives often provide digital scans or will do a lookup for a fee.

One practical tip from my own sleuthing: contact the special collections librarians directly rather than relying solely on catalogue entries. A short, polite message asking whether they have any uncatalogued Mulford items often gets better results than a keyword search alone. Joining or lurking in forums and mailing lists for collectors of nineteenth-century American thought or early self-help/New Thought-era materials can also yield leads; collectors sometimes share discoveries before they hit catalogues. Finally, bibliographies and scholarly articles on Mulford or on the New Thought circle often cite manuscript repositories in footnotes — following those citations is an underrated research shortcut. I’ve had the most luck combining catalog searches with direct archive queries and occasional auction-watching.

If you want, I can sketch a short message template you could use to contact libraries or an auction-tracking checklist to set up alerts. Honestly, there’s something really satisfying about uncovering an overlooked Mulford line in a brittle letter — it feels like finding a secret conversation across time.