The answer is a gentle, friendly Wrong! You need to get all of the 19 "original" releases and add them to your collection. The first five, as mentioned, can be obtained as two-fers on Bear Family. The other 14 are still in print, except for Waiting for You, which you need and will find at E-bay or some source, or from someone here. You need to listen to each album in it's entirety at least once, in it's original order to get the feel of where he was at any particular time in his career. Val's site has some nice pictures of all the covers, check it out and then go to CDUniverse.com and search on Gordon Lightfoot and fill your basket, click ORDER and then wait about three days. Then you'll be done. I don't know enough about bootlegs to tell you but someone else will jump in here I'm sure.
Go shopping, Be Happy!
Bill
You've already got two so you're on your way.