Guy Murchie, "The Soul School" (1995), ref. to Yellowstone, 1928:

"The boys...were earthy, very carefree and sang a lot, and I'll never forget their favorite song:
   
    It was in the month of May when the lambs begin to play,
    The birds were singing sweetly in the morn.
    And I saw a pretty maid, and unto her I said,
    'Let me wind up your little ball of yarn.'

    'O kind sir,' said she, 'You're a stranger unto me,
    Although for others you may have a charm.
    You had better go to those who have money and fine clothes
    And wind up their little ball of yarn.'

    But I took her by the gown and I gently laid her down,
    Not intendin' for to do her any harm,
    And it was great to her surprise when I rolled between her thighs,                  
    And wound up her little ball of yarn.
   
    Now all you maidens fair, let me tell you fair and square,
    Don't venture out too early in the morn.
    Like the blackbird and the thrush keep your head beneath the brush   
    And your hand upon your little ball of yarn.