Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Junctor
open-in-new
<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Scudder, F.J.; Reynolds, J.N. (January 1939). "Crossbar Dial Telephone Switching System". Bell System Technical Journal. 19 (1): 90. <a href="https://archive.org/details/sim_att-technical-journal_1939-01_18_1/page/90" target="_blank">https://archive.org/details/sim_att-technical-journal_1939-01_18_1/page/90</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Bell Telephone Laboratories (1949). No. 5 Crossbar - Bell Labs Record Compilation. pp. 20–25. <a href="http://archive.org/details/bellsystem-no-5-crossbar-blr" target="_blank">http://archive.org/details/bellsystem-no-5-crossbar-blr</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>