I posted this awhile back. http://groups.google.com/groups?q=JOAT+LINCOLN+LOGS+group:rec.woodworking&hl=en&lr=&ie=UTF-8&selm=25252-3AF5AE02-128%40storefull-285.iap.bryant.webtv.net&rnum=1 The link there is bad, this is a good one. http://www.woodcentral.com/bparticles/lincoln_logs.shtml
I've seen where someone says they were redwood. The ones I had were not redwood, definitely not redwood. Possibly no known wood today. They looked like they were hewn by hand, by a tiny little man, about 6 inches tall, with a dull adze. But, what the Hell, wouldn't have been any more fun if they were pink ivory. I did have green roof things, and I am pretty sure I recall they were long wooden slats, you laid sideways, sorta lapstrake style. The roof ends had notches to hold them in place. And red, wooden, chimneys. I had something with that anyway. About certain no plastic. And not even anywhere close to enough of them. I figure 5 or 6 55 gallon drums full might have been barely adequate.
Make them out of any wood you want.
By the way, there is a site out there somewhere (I'm pretty sure I posted it it), with dimensions, illustrations, etc., for making this type of thing.
JOAT Let's just take it for granted you don't know what the Hell you're talking about.
Life just ain't life without good music. - JOAT Web Page Update 16 Jul 2003. Some tunes I like. http://community-2.webtv.net/Jakofalltrades/JOATorJackOfAll/page4.html