http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Telephone systems) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DTelephone%20systems Results for your query: docsPerPage=100;f277-subject=Telephone systems Thu, 01 Jan 1970 12:00:00 GMT The Blackstone of telephony: a codifying of the demands of telephone service. Kellogg Switchboard & Supply Company https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Telephones in farm life. North Electric Company https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT