Has anyone come across any type/brand remote control mirrors that will fit a a 79 F250? Thanks

 

Yes, any of the ones (Western style) that mount on class 8/tractor trucks can be adapted to the F-series. Some come standard on the E-series, especially bus bodies, from some aftermarket body OEMs. You can even get them with heating elements.

I would suggest doing some shopping at a local truck store. Usually anyone that handles International or Mack will carry a wide variety of mirrors. If you register at the Ryder website you can order them on-line, plus, they have a printed catalog available.