That still of Obie is up in one of the threads on the Kong folder right now if you want to take a look.

That publicity still of Kong and the lightning was probably derived from Edgar Wallace's treatment where Kong was killed at the end by a bolt of lightning. Thematically, it was a much better idea to have him killed by the biplanes rather than some random, miraculous act of nature. To think that mutated over the years into both Kong and Godzilla drawing strength from bolts of lightning!

A perfect Monster has no end...