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7. etc., executed in the establishment of the donors. - 48 numbers. Hill, John Henry, Nyack Turnpike, N.Y. Etchings by the donor; aquatints by John [[?]]. - 4 numbers. Hitchcock, Prof. Romyn, Washington, D.C. Photo-Collotypes. - 6 numbers. Hoe, Robert, & Co., New York. Illustrations of presses built by them. - 3 numbers Hoskin, Robert, Brooklyn, N.Y. Proofs from woodengravings by the donor. - 11 numbers Hough, Walter, Washington, D.C. Old German etchings. - 2 numbers Hovenden, Thos., N. A. Proofs of etchings by the donor. - 2 numbers. Ives, Frederich O. (Crosscup (West), Philadelphia, Pa. Illustrations of the original "Ives Process" including models of machinery, etc.; ^[[book: "A New Principle in Heliochromy".]] - 69 numbers. Juengling, F. New York, N.Y. Proofs of wood-engravings by the donor. - 27 numbers Kappes, Alfred, A. N. A., New York, N. Y. Charcoal drawing by the donor.