I heard the "Little Willy" version of "Dummy Line" at Boy Scout Camp Chippecotton in the late 1950s. Here's a version from somebody who had been a counselor at the camp:

THE DUMMY LINE (Little Willy Version)

Chorus:
Ridin' ridin' ridin' on the dummy dummy line
Rain or shine I'll pay my fine
Rain or shine I'll pay my fine
Ridin' ridin' ridin' on the dummy dummy line

Verse 1:
Little Willy Jones on his way home from school
Saw two bits at the foot of a mule
Stooped over to pick it up, quiet as a mouse
Sweet music next day at little Willy's house
CHORUS

Verse 2:
Little Willy Jones all dressed up in sashes
Fell into the fire and burned to ashes
By and by the room got chilly
But no one cared to stir up Willy
CHORUS

Verse 3:
Two little girls dressed up in pink
Tried to get to heaven through the kitchen sink
Drain pipe broke and down they fell
Instead of going to heaven they went to …
CHORUS

Verse 4:
Little Willy Jones fell down the elevator
There they found him six months later
They held their noses and said "gee whiz
What a spoiled child our little Willy is"
CHORUS

Verse 5:
Little Willy Jones found some dynamite
But the label he couldn't read, quite
Curiosity never pays
It rained Willy for seven days
CHORUS