My book, Seeing by Electricity: The Emergence of Television, 1878-1939, is available from Duke University press, as part of the Sign, Storage, Transmission book series.
You can read the table of contents and the introduction here
The book traces the early history of television, from fantastical image transmission devices initially imagined in the 1870s such as the Telectroscope, the Phantoscope, and the Distant Seer to the emergence of broadcast television in the 1930s. It highlights points of overlap and divergence in the histories of television and cinema, and demonstrates that the intermedial relationship between the two media did not start with their economic and institutional rivalry of the late 1940s, but rather goes back to their very origins.
For more, including order info and advance praise, see here.
For the book page on Amazon, see here.