While I was not paying attention (several years apparently):
bulk.resource.org access to nonprofit filings terminated https://web.archive.org/web/20140715041700/https://bulk.resource.org/irs.gov/eo/terminate.html
bulk.resource.org entirely taken down, last capture at https://web.archive.org/web/20160527023419/https://bulk.resource.org/ vague note at https://twitter.com/carlmalamud/status/773685462707818497
:( :( :(
I guess for nonprofit filings https://projects.propublica.org/nonprofits/ probably gives easier access to the same info. I'm not sure if there's even more available at https://aws.amazon.com/public-datasets/irs-990/