h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Garner Ted Armstrong - Vocals

GTA had his radio show broadcast by Radio London, and other pirate radio stations in the 60s I guess this is where the Bonzos heard the name.
http://www.geocities.com/hwa_research/
http://www.garnertedarmstrong.ws/

Peter Scott - Duckcall
Peter Scott son of the ill-fated polar explorer, Captain Scott, was a well known birdwatcher. Thus he was on duckcall.
http://www.birdsofbritain.co.uk/features/mao-aug-00.htm

Casanova - Horn
We all know who Casanova was, but the smutty joke is having him on Horm.

Roy Rogers on Trigger
Roy Rogers was not the Lone Ranger, but a cowboy in his own right.
http://classicfilm.about.com/library/weekly/aa070698.htm
http://www.royrogers.com/
The Lone Ranger was Jack (Clayton) Moore http://www.skypoint.com/members/joycek19/ranger.htm

Dan Druck - Harp no no no It is Dan Druff on harp. That terrible ailment, dandruff, that affects all women and men at some time in their life.

Max Jaffa
Max Jaffa was a violinist who had an easy listening orchestra way back in the 40s or 50s.

Zebra Kitt
Zebra Kitt was a wrestler that Peter Blake painted a picture of called The Masked Zebra Kid in1965.
http://en.wikipedia.org/wiki/Peter_Blake_(artist)

Horace Bachelor
Horace Bachelor advertised on Radio Luxembourg during the 60s for a betting scheme that ensured you could win the football pools. The advert would spell out the address "K-E-Y-N-S-H-A-M" hence the Bonzos album of that title.
http://meltingpot.fortunecity.com/neches/636/mem.htm

The following link give you the full lyrics to the song.
http://www.scbd.connectfree.co.uk/flops/intro-outro.html

James