What were the words to the poem that Bruce Forsythe read in 1960 during the last show of Sunday Night at the London Palladium?

Bronco Layne had a pain so they sent for Waggon Train,

Waggon Train was too slow, so they sent for Ivanhoe,

Ivanhoe killed a man ,so they sent for big Cheyanne,

Big Cheyanne was having tea, so they sent for Laramie

Laramie lost his cargo so they sent for Wells Fargo,

Wells Fargo lost their hunter ,so they sent for Billy Bunter,

Billy Bunter was too large, so they sent for I'M IN CHARGE!

Brian Harvey