There are directories for attorneys, huge ones, many volumes for every attorney in the country - can't think of the name right now - a hyphenated name, Hubble - ?? which the law libraries have and the large public libraries. These come out each year, so I'm not sure where a set from 1900 might be. Everything else is on CD's now, so I imagine the new sets are too. Possibly Lexis-Nexus. There are also (at least today) annual directories, published by Parker, which gives name, address, phone, specialty for each locality. It is the first set which gives you birth, wife, college, mini-biographical paragraph. Also check the city directories for several years around that time - at St. Louis City and County libraries I believe. You might also check with the American Bar Association. Maureen (a former Paralegal)