Being an old, stubborn-ass, died in the wool, West Texas boy who cut his teeth on the stuff coming out of Ft. Worth (Hurst) way back in the day..., I'd be doing myself a huge injustice if I didn't mention the Bell 533. Late 1950's through late 1960's technology.
(...being that I still don't have my secret clearance to post pictures, y'all just gonna have to "cut and paste")
4.bp.********.com/-2vTNUzqr48c/T1nwZdarL0I/AAAAAAABVWY/gtTTxozj7H8/s1600/Bell533-bia2.jpg
