O.K. Julia
I got the information back on the series I used as an elementary music teacher. I am retired now but found this series very useful in both districts I taught in. (39 years in education). Here is what I used:

YOUNG PEOPLE'S FOLK DANCES (if I remember right there are 7 CD's
   in the set and it is for all levels and ages)
      There is also a square dance series I used,
EVERYONES' SQUARE DANCE
They are produces by
    Merit Audio Visual
    132 W. 21st
    New York, New York 10011
I purchased it from one of the many school music supplies, Poppler, Friendship, West Music or such.
Hope this helps out. bet