Black Leather Black Booklet. Outside Cover says:

Black Leather Black Booklet. Outside Cover says: Northland Mutual Life Company. Pages are not numbered but probably 40+. Inside Fire Page says: Instructions to Agents, Occupational Ratings, Premiums, Tables. Northland Mutual Life Company, Rockford, Illinois. July 1936. This is Rate Book No. 35. Very Good Condition for Age. Looks like whomever was assigned Book No. 35 in 1936 did not sell much life insurance.