Another idea from my professional genealogist friend. Regarding families that are being researched: Have a file folder for each head of family being searched. Put in your working group sheets. (NEVER take the copies of the marriage certificates, etc. to the library with you...too many never get home again.) Carol recommends using a different group sheet for each source found, because sometimes sources conflict. Then one can spread the six (or however many group sheets) out around you and evaluate the possible reliability of each source. When you prove something to your personal satisfaction, then put it on a separate group sheet that is done in a different color, perhaps red. {Remember these are all work group sheets, not the final pretty copy} The different color will help show up holes that need to be filled in yet. If using a microfilm of marriage records and the marriages of Mom & Dad and all 10 kids is in that one film, it isn't necessary to put in 11 group sheets, since all the marriage data is from one source: Microfilm #______, FHC, Marriage records of Knox co TN. Put all the marriage info on the same working group sheet. If you've made xerox copies, they can either go into the work folder, or into your marriage documents folder with appropriate notation on the working group sheet where you can find those copies in a hurry if you need to find them...but always saying where the copy came from. Anyway, the system helps when weeding through bits & pieces, especially with those families where data comes in very slowly. Karen