A bug that you may want to be aware of - I recently trialled Archive.org's new native full-text searches (as detailed at http://blog.archive.org/2016/10/26/sear ... verything/), and I noticed that a few magazines were coming up in that search that for some reason do not come up on Lantern.
The particular one I noticed was the 1937 run of Photoplay. It is still accessible via the main MHDL page (http://mediahistoryproject.org/), but if, for example, you do a search on a term via Lantern, limiting the publication to 'Photoplay' and the date range to 1937-1937, you get zero hits. I've also tried adjusting the date range to 1936-1938 - you get the 1936 and 1938 editions, but no 1937.
Discussion related to mediahistoryproject.org. More general discussion of topics should go to main boards.