Browse Items (3 total) Subject is exactly "Telephony." Browse All Browse by Tag Search Items Sort by: Title Creator Date Added [Letter to George F. Fitzgerald from Oliver Heaviside], Heaviside, Oliver, 1850-1925, 1893 [Letter to George F. Fitzgerald from Oliver Heaviside], Heaviside, Oliver, 1850-1925, 1893 [Letter to George F. Fitzgerald from George Minchin]. Sort by: Title Creator Date Added Output Formats atom, dcmes-xml, json, omeka-xml, rss2