I had the same problem on a 49 Chrysler. Took out the door lock and took it to a locksmith, this saved me a service call. Door lock same as ignition. Good luck finding a locksmith who actually knows his job. I had to go to 4 before I could find an old timer who could key a 5 pin lock.
I am a retired locksmith. What I would do is take the door lock to a competent locksmith theirs a code on the lock. The door and the Ignition locks used the same key. The glove box and trunk the other key. The KEY (Pun) is competent locksmith. Even if door lock does not have a code the lock can be decoded and a key made. This is saying the lock or locks have not been changed.
Since I am not a licensed locksmith, I cannot own the actual tools. That would be a felony in my state. Nor would I EVER open a lock illegally, under any cir***stances. Thant said, you need a tension wrench, and a hook. Google is your friend. They are every bit as complicated as they appear. Youtube is your friend. Stay out of trouble.
Thanks so much to all who have helped. I have several options now! One gentleman went out of his way to help and will know in a couple days if this is solved. More to come on that if it works out. Im going to stand down until the weekend. Just wanted to say how thankful i am to be part of this forum..and to say I appreciate all the help! kevin
If you still need info, as to how to get the outside door handle off, yell out. One key works doors, ignition, glove box and trunk. Click below: http://chevy.oldcarmanualproject.com/chevyowner/49om16.htm I post this page from the owners manual because some believe it takes TWO KEYS to open everything on a '49 Chevy. Not the case. Good luck.
You can't always count on the locks being what they're supposed to be. I bought a pickup once that had three keys; one each for the ignition and each door (and the doors appeared to be original). I had the door locks re-keyed to match the ignition....
I have found glove box locks WITHOUT the key code, but have ALWAYS found the key code, when removing the outside door handle. Yes, check glove box lock FIRST.
If what the gent sent you doesn't help I've found out in the past that quite often a really worn out key can be jiggled enough to work the switch. Then pop the cylinder out before you end up locking it back. If memory serves right you have to turn the switch to Accessory to get the pin to push in. I haven't asked them about it but believe that the locksmith shop I use will accept mailed in work and their rates are more than reasonable.