http://www.billboard.com/articles/news/6457936/madonna-frank-sinatra-rod-mckuen-diesAn article indicating part of the pretty wide scope of McKuen's impact in the music world. Though it leaves out some things.
Such as "The Beat Generation," the song Rod wrote and produced (and recorded under the name "Dor" with the late Bob McFadden), which was rewritten by Richard Hell as the punk anthem "Blank Generation."
Or "The Livin' End," the rock'n'roll number he wrote (with "Hank" Mancini) and produced in 1958 for a teen named Scotty Engel, later to gain a bit of fame under the name Scott Walker.
Or the fact he got his first gig as a professional entertainer with the help of Phyllis Diller - up in San Francisco at the Purple Onion.
He also had one of the bigger record collections out there - reportedly 500,000 LPs and around 100,000 CDs, as well as a 20,000 volume library.