you might try going to the auld recreation center near the Zoo and checking with the musicians at the contra dance..they could probably help if not with those exact songs, then some other interesting ones.
lincoln contra dance the next dance is sat feb 7 – the first Saturday of each month from 7:30 – 10:30 p.m (instruction for beginners from 7:15 to 7:30). Auld Recreation Center in Antelope Park, 3130 Sumner (off A Street).