Chiropractic Make Me Prove It!
Make Me Prove It! says the bold text in a chiropractors advertisement that appeared in a Los Angeles newspaper around 1921. The chiropractor, Dr. C.C. Petersen, was one of several downtown Los Angeles area chiropractors placing advertisements in local newspapers. Similar to the You Need Not Be Sick! advertisement by 1919 chiropractor Joseph H. Coleman, Dr.