Original Posted By: Eli or Robert or Teresa Bozeman
A few days ago there was a thread about the origin of "blue line" and "whiteline" plans. I looked at a set I recently aquired from a friend and foundthat they are what I would call "black line". Definitely not blueprints ofany kind, more like printed on a press. I am guessing my friend bought thesein the seventies but cannot reach him to ask. Anybody know the vintage ofthese plans?-----Original Message-----