Anyone remember Whirlybirds?

It's about two guys who run a helicopter charter service. It ran for three seasons beginning in 1957. I remember watching this as a kid, although I couldn't have seen it's original run. I seem to remember it being on Saturday afternoons or thereabouts.

Cheesy by today's standards, but to a young kid in the 60s it was pretty cool. It seems like they spent a lot of time searching for missing prospectors and the like. I can still hear the chirps of the chopper blades as "Chuck" and "P.T" landed the "bird."

Not on DVD that I know of, but easily found on YouTube.