Okay here we go. I ordered my headliner from Acme Auto Headlining, 550 W.16th St., Long Beach,CA. The headliner was an excellent fit and they supplied me with material patches to determine color I needed. They also provided me with enough material to do the visors. Give them a call. For the '41 you will probably need tacking strips and they can be obtained from Restoration Specialties & Supply, Inc., 148 Minnow Creek Lane, Windber, PA 15963. TEL 81-467-9842. You will need both 1/2 X 5/16 and 3/4 X 5/16. When you remove your old headliner try not destroy the taking strips. Number the bows front to back so they go back correctly. When installing I install front to back on center first to get a tight fit then I work the sides. It needs two people as far as I'm concerned. A staple gun with the correct length of staples. It is fun as you go along to see the good job you are doing. Make it fun. I'm not familiar with the 50s Cadillac but I believe the process is the same...it was for my '61 Chevy. Chet25441
