My novella, The New Moon Murders, is a pulp set in the 1930. You can find it on most eBook distributors.
Age of Aces is a great site with pulp air stories from the 30s and 40s. Best of all, it has dozens of stories from Flying Aces, War Birds, and other magazines reproduces as downloadable PDFs.
Great for making pulp magazine covers
Pulp stories featuring 'You Decide' path generators.
Advice for game mastering pulp adventures
This is a formula, a master plot, for any 6000 word pulp story.
Prop documents in the form of Acrobat PDF files that you can download, customize, and print on an ordinary printer
Jazz age slang
Miniatures Showcase compiled by the White Knight
Ebay listing for pulp stuff