I've been researching the 1910 and 1920 NY and MA censuses. In the columns under the large heading of Occupation, there are 4 columns. The first says Trade or Profession, and is filled with None, Laborer, Draftsman, etc. The second column asks for type of business, in some cases filled in by a business name (Elec. Mfg. Co., for General Electric). The next column asks Employer, employee, or works on won account. It's that query (or rather the responses that have me puzzled. I've seen some entries "ww" (which probably means works for wages), S (for self?) and W. (??) On another census I saw "Empl," which could mean employer or employee. Did it depend upon the individual census taker?? TIA Jean