A letter book, 1910-1911, of T. M. Keene, with one letter by Benedicta J. Keene, of Mold, relating to the writer's invention for the securing of stair carpet, the purchase of iron and brass castings, nails, screws, ledgers, boots, wickerwork fencing, etc., and the payment of accounts.

Specification for improvements in apparatus for balancing and operating windows patented by William Hughes, Bethesda, 1892; agreement for partnership with W. J. Parry; and correspondence relating to the invention, 1892-1893.