While building the sets for Holding Our Own Episode 1, I put an ad in the local trade paper that started, "Kids all grown up? I'll buy their Lego sets!" then went on with the pertinent information. Someone responded, and I bought a 46-gallon container of city/space/pirates from 1980s-about 1994, and 25 instruction booklets, for $44! Another lady responded saying that she had all red & white bricks. I knew something was up so I checked it out. Turns out she had 700+ bricks from a 1965 Town Plan set (and a really unique gears set from around 1970), and I paid $20 for it. The bricks had an older Lego logo, and they are printed 90 degrees rotated from where they are now. Some local papers let you place such ads below $5 or even free, and you never know what people have for you!
You can see an old grey baseplate from that town plan set in the 6-second Polar Burger cut of my video. On my page it's "Holding Our Own episode 1C".
https://vimeo.com/channels/holdingourown http://holding-our-own.tumblr.com"None practice tolerance less frequently than those who most loudly preach it."