My WIP has three main male characters. It's set in a small town in the mid-1930s. Three friends graduate from high school together. One stays in the small town and continues working as a mechanic at a service station. One goes off to the state university with a vague idea of becoming an engineer - flunks out after only a year from too much partying and becomes an apprentice welder. My problem is with the third character. I want him to go off to a big city for a year to learn a profession. He returns home after the year and has earned the title "doctor". In the current draft I have him becoming an optometrist. Remember this is the 1930s. Could you become an optometrist after a years' formal training? Maybe with an apprenticeship after the formal training. I could have him becoming an optician, but I don't believe that profession carries the title of doctor. I thought about having him study chiropratic, but that just doesn't seem to work. He could become a minister, but I'm not sure that even in the 30s you could earn the title doctor with only a year's formal training. I might could stretch out the absence from their home town for two years, but I really prefer to have only one year's absence. I appreciate any thoughts.