Before revision: His Ingenuity Helped the Deaf Tap the Power of Telephones, Remembrances, Wall Street Journal, August 21, 2009, p. A9Gallaudet University, book excerpt APCOM collected old teleprinter machines (TTYs) from the Department of Defense and junkyards.
After revision: APCOM collected old teleprinter machines (TTYs) from the Department of Defense and junkyards.