yes, one will be the residence and the other the work address. If you go to the website I put up for each of the lists, assuming it is still free, you should be able to either a) discern a pattern of home residences and work addresses by where they're listed or b) pull up the database and there may be a description as to what column is what. You've noticed that these are all approximately 1890. Since the 1890 census is mostly destroyed thru neglect, they are accumulating these directories as a sort of pseudo census. If you have problems getting to the database description go to www.ancestry.com and at the far right there will be a box in a column saying recent databases. Click on that. Hope this helps, Chris PS one more note. Old directories would list both the individual's work and home place. I believe this was to increase sales to businesses for the purpose of collections of bills due. I use to do collections in college and we used what was called a Polk directory. You could look up people by their street or phone number, which might be kind of nice later on so you could see who else was living near your ancestor. Don't know how far they go back but I've seen them available at the local library.