Hi, Rastaaaaaaaa-
Long time, no see. I moved your post over here so we'd have all the information on this song together. Songfile.com says the Harlan Howard song "Everglades" was recorded by the following:

THE KINGSTON TRIO   
THE KINGSTON TRIO   
REX ALLEN, JR.   
THE KINGSTON TRIO CAPITOL COLLECTORS SERIES
THE KINGSTON TRIO GREATEST HITS
THE KINGSTON TRIO THE GUARD YEARS - DISC 3
KINGSTON TRIO   
THE FENDERMEN MULE SKINNER BLUES
KINGSTON TRIO, THE CAPITOL COLLECTORS SERIES
THE KINGSTON TRIO CAPITOL COLLECTORS SERIES

I'm thinking maybe it was Rex Allen or the Fendermen that you heard, but my experience is that the list at songfile.com isn't all-encompassing. BMI.com says the song was also recorded by groups called "Blackouts" and "Treat Her Right."
Nice to see you here again.

-Joe-