*feh*

Yes Tom Christensen was largely responsible for both huge chunks of the Perl 5 perldoc as well as the various Camels. Much of what got expanded upon and written for the 2nd edition Camel got merged back into the perldoc after its publication (and has subsequently been further honed and improved by countless others). I was using the copyright dates of the two reference tomes five years apart to clarify what I meant by relative immaturity, not to produce further quibbles about the genealogy of perldoc.