| Call number | Item |
| T | Technology (Go to start of category) |
| TK | Electrical Engineering (and computer networks); Nuclear Engineering (Go to start of category) |
| TK5741 .M7 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Radio-Telegraphy (London: A. Constable and Co., 1908), by C. C. F. Monckton (PDF at worldradiohistory.com) |
| TK5742 .U44 | Study Guide and Reference Material for Commercial Radio Operator Examinations (Washington: GPO, 1955), by United States Federal Communications Commission (PDF at worldradiohistory.com) |
| TK5743 .L43 1942 | Learning the Radiotelegraph Code (first edition; West Hartford, CT: American Radio Relay League, 1942), by John Huntoon (page images at HathiTrust; US access only) |
| TK5746 .N5 | Radio Questions and Answers on Government Examination for Radio Operator's License (first edition; New York and London: McGraw-Hill Book Co., 1921), by Arthur R. Nilson (page images at HathiTrust) |
| TK5981 .C76 | Audio Measurements (New York: Gernsback Library, c1958), by Norman H. Crowhurst (PDF at worldradiohistory.com) |
| TK5981 .C77 | Basic Audio (3 volumes in 1; New York: J. F. Rider, c1959), by Norman H. Crowhurst (PDF at worldradiohistory.com) |
| TK5981 .M3 | Acoustic Design Charts (Philadelphia: The Blakiston Co., c1942), by Frank Massa |
| TK5981 .T8 1954 | How to Service Tape Recorders (New York: J. F. Rider, c1954), by C. A. Tuthill (PDF at worldradiohistory.com) |
| TK6015 .C3 | The History of the Telephone, by Herbert Newton Casson |
| TK6018 .B4 A5 | The Bell Telephone: The Deposition of Alexander Graham Bell, in the Suit Brought by the United States to Annul the Bell Patents (Boston: American Bell Telephone Co., 1908), by Alexander Graham Bell, contrib. by Charles H. Swan |
| TK6175 .B4 1959 | Transmission Systems for Communications (2 volumes; New York: Bell Telephone Laboratories, 1959), by Bell Telephone Laboratories (page images at HathiTrust) |
| TK6540 .B78 | Radio Times (full serial archives) |
| TK6540 .N365 | National Radio News (partial serial archives) |
| TK6540 .R17 | Pacific Radio News (full serial archives) |
| TK6540 .R17 | Radio (successor of Pacific Radio News; 1921-1947) (partial serial archives) |
| TK6540 .R2 | Radio Age, ed. by Frederick Arthur Smith (full serial archives) |
| TK6540 .R232 | Radio Stars (full serial archives) |
| TK6540 .R34 | Radio Craft (partial serial archives) |
| TK6540 .R4 | Radio Digest (partial serial archives) |
| TK6540 .R668 | Radio Amateur News, ed. by Hugo Gernsback (full serial archives) |
| TK6540 .R668 | Radio News (full serial archives) |
| TK6540 .R72 | Radio Revue for the Listener (only 4 issues known to be published; 1929-1930) (full serial archives) |
| TK6540 .S653 | L'Onde Électrique (in French) (partial serial archives) |
| TK6540 .W45 | What's On the Air (1929-1931) (partial serial archives) |
| TK6544 .C6 | Radio Alphabet: A Glossary of Radio Terms (New York: Hastings House, 1946), by Columbia Broadcasting System, inc. (page images at HathiTrust) |