![1929 Radiotron cover](https://coutant.org/radiotron/radiotron.jpg) This twenty-four-page booklet from RCA in 1929 is a combination vacuum tube catalog and U.S. radio station directory. Two versions are available for download: First is a 9.2-megabyte high-resolution PDF, while the second is a 3.4-megabyte low-resolution PDF. A child’s pencil scribbles are seen on a few pages. This booklet was provided through the courtesy of Michael Callaghan.
![Pages 7 and 8](https://coutant.org/radiotron/pages.jpg) Here are sample pages 7 and 8.
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