00675ctm a2200217Ia 4500 morkrumsystemofp00earl CaSfIA 20240523202047.0 m o d cr|||||||||||| 080911s1917 xx doea om 000 0 eng d (OCoLC)1049664319 IAH IAH IAH CaSfIA Earle, Ralph H. The Morkrum system of printing telegraphy / by Ralph H. Earle. 1917. 1 online resource ([9], 233, [35] leaves : charts, photos, plans, illustrations) Thesis (B.S.)--Armour Institute of Technology, 1917. B.S. in Electrical Engineering, 1917. Electrical Engineering. https://archive.org/details/morkrumsystemofp00earl Free eBook from the Internet Archive https://openlibrary.org/books/OL25474577M Additional information and access via Open Library morkrumsystemofp00earl ark:/13960/t83j3zf8v