The source recording is from a 1930 recording of Seven Foot Dilly and His Dill Pickles. I learned from a modern recording of the Old Yeller Dog Band because I liked how the fiddle filled in the held notes.
Here's a Henry Reed version of Red Fox, recorded in the enormous collection of this West Virginia fiddler by the great Alan Jabbour. I went to gCGCE tuning for ease of playing down the neck.
This version of Portsmouth Airs is based on Buddy Thomas' fiddling. He'd visit Jimmy Wheeler, leaving Kentucky to go to the neighboring town of Portsmouth in Ohio.
A Tune of the Week written in the late 1800's, considered a ragtime or tin pan alley tune. It's a tough one to play, especially having just learned it today, but it was also an unusual tune to figure out.