Jay ~ CarGabMA sent me a couple of articles written some years ago regarding the 1959 Squarebird. Here they are for your enjoyment. You can right click on these .pdf files and select Save As to save them to your hard drive. You can also print them out.
http://www.squarebirds.org/SB/1959Thunderbird.pdf
http://www.squarebirds.org/SB/1959Thunderbird-2.pdf
http://www.squarebirds.org/SB/1959Thunderbird-3.pdf
http://www.squarebirds.org/SB/1959Thunderbird-4.pdf
http://www.squarebirds.org/SB/The1959Squarebird.pdf
http://www.squarebirds.org/SB/The1959Squarebird-2.pdf
http://www.squarebirds.org/SB/1959Thunderbird.pdf
http://www.squarebirds.org/SB/1959Thunderbird-2.pdf
http://www.squarebirds.org/SB/1959Thunderbird-3.pdf
http://www.squarebirds.org/SB/1959Thunderbird-4.pdf
http://www.squarebirds.org/SB/The1959Squarebird.pdf
http://www.squarebirds.org/SB/The1959Squarebird-2.pdf