Teresa - the one about the pelican is by Edward Lear. Or possibly Hilaire Belloc.   Between them they wrote 250% of all clean limericks.

Two from my childhood:

There was an old lady from Harrow
Who went round the world ina barrow
In crossing Ben Nevis
She fell down a crevice
For the path was exceedingly narrow

A lady who lived on the Humber
Had a wond'rous collection of lumber
Old boots and tin whistles
A brush without bristles
Three harps and a fossilised plumber

and one from slightly later, related to Nerd's:

There once was a man of Westphalia
Who painted his arse like a dahlia
Tuppence a smell
Was all very well
But threepence a lick was a fahlia.

Steve