"Amelco" seems too much like an initialism of "American Electronics Company" to be a coincidence. Although I can find a lot of old data about Philbrick (e.g. www.philbrickarchive.org ), Amelco seems more elusive and the only reference to any sort of catalog from them I could find is <a href="https://www.abebooks.com/first-edition/Amelco-Data-Book-Volume-1-Semiconductor/11143055573/bd" rel="nofollow">https://www.abebooks.com/first-edition/Amelco-Data-Book-Volu...</a>