Many of the ones that were free are available as PDF; this guy has them archived (film, etc. datasheets too) and categorized as some are harder to find on the Kodak website.

(be sure to check elsewhere there for Fuji, Agfa, etc.)

In particular on that list I like "Photography Under Arctic Conditions".

As for the ones that aren't PDF, I like them all too! Esp. the old color related ones ca. 1945-65.

Back when Kodak was fat with profit and big fat corporations still felt it proper to engage in public service without nickel and diming you at every possible opportunity.