What we find pretty interesting is that while people tended to keep various strength books and courses, almost no one kept the ads, which are  fascinating in their own right.  Here’s a classic ad from Earle E. Liederman who did more advertising than any of the Mail Order Muscle Barons.  Whether you are a fan of oldtime strength training or oldtime copywriting, it’s a good idea to pay close attention… we may have several of Liederman’s books available in the near future.