Illustrated London News. The Manufacture of Steel Pens in Birmingham. Feb. 22, 1851. P. 148–149.
The Illustrated Magazine of Art. Pencil-Making at Keswick. Vol. 3. 1854. P. 252–254.
Indian Standards Institution. Specification for Black Lead Pencils. New Delhi, 1959.
International Cyclopedia. Revised with large additions. NY, 1900.
Israel, Fred L., editor. 1897 Sears, Roebuck Catalogue. NY, 1968.
Ives, Sidney, general editor. The Parkman Dexter Howe Library. Part II. Gainesville, Fla., 1984.
Jacobi, Albert W. How Lead Pencils Are Made // American Machinist. Jan. 26, 1911. P. 145–146.
[James, George S.] A History of Writing Instruments // The Counselor. July 1978.
Japanese Standards Association. Pencils and Coloured Pencils, JIS S 6006–1984. Tokyo, 1987.
Jenkins, Rhys. The Society for the Mines Royal and the German Colony in the Lake District // Transactions of the Newcomen Society, 18. 1937–38. P. 225–234.
Jennings, Humphrey. Pandaemonium, 1660–1886: The Coming of the Machine as Seen by Contemporary Observers. Edited by Mary-Lou Jennings and Charles Madge. NY, 1985.
Jewkes, John, David Sawers, and Richard Stillerman. The Sources of Invention. London, 1958.
Joglekar, G. D. A 100 g.-cm. Impact Testing Machine for Testing the Strength of Pencil Leads // Journal of Scientific and Industrial Research. № 21D. 1962. P. 56.
Joglekar, G. D., T. R. Gopalaswami, and Shakti Kumar. Abrasion Characteristics of Clays Used in Pencil Manufacture // Journal of Scientific and Industrial Research. № 21D. 1962. P. 16–19.
Joglekar, G. D., P. R. Nayak, and L. C. Verman. Electrical Resistance of Black Lead Pencils // Journal of Scientific and Industrial Research. № 6B. 1947. P. 75–80.
Joglekar, G. D., A. N. Bulsara, and S. S. Chari. Impact Testing of Pencil Leads // Indian Journal of Technology. № 1. 1963. P. 94–97.
Joglekar, G. D., and B. R. Marathe. Writing Quality of Pencils // Journal of Scientific and Industrial Research. № 13B. 1954. P. 78–79.
Johnson, E. Borough. How to Use a Lead Pencil // The Studio. № 22. 1901. P. 185–195.
Johnson, E. S. Illustrated Catalog of Unequaled Gold Pens, Pen Holders, Pencils, Pen and Pencil Cases, Tooth Picks, Tooth & Ear Picks, &c. in Gold, Silver, Pearl, Ivory, Rubber & Celluloid. NY, [ca. 1895].
Journal of the Writing Equipment Society. Various numbers.
Kane, Joseph Nathan. Famous First Facts: A Record of First Happenings, Discoveries, and Inventions in American History. 4th ed., expanded and revised. NY, 1981.
Kautzky, Theodore. Pencil Broadsides: A Manual of Broad Stroke Technique. NY, 1940.