Thank you very much for your responses and I apologize for my delay letting you know what I found.
I embarrassed to admit it, but I had not bothered checking the fuse since I had some light, although very dim. When checking the fuse, I found the fuse was gone! I inserted a fuse and all garage lights work fine. I am still surprised there could be any light without a fuse.
Thank you very much for your help; I will do better job of trouble-shooting before asking questions in the future.
Thanks again!