Back in the day – and almost certainly “the day” was “every single moment from the beginning through now to the end” – Lockheed kept files on what the competition was doing. Some of these files included publicly available info on competitors aircraft. And sometimes it was information that was classified, and that by all rights Lockheed probably shouldn’t have been aware of. But it only made good sense to collect all the intelligence they could. Some of this stuff has started to leak out. Not via Wikileaks… but via eBay. One seller has a number of single-page sheets providing summary data on aircraft from the 1950’s. Ya gotta wonder just how big the whole file on aircraft of the time was.
Here’s the Lockheed summary file on the Martin P6M-1 SeaMaster. Fortunately the seller provided decent photos of the files.
