Those names appearing on the right edge then become the left most entry on another form. For each pair of lines, or marriage, fill out a Family Group Sheet with all of the data you can. These then become the work sheets for research. After you have completed the forms to the best of your know-ledge, use the history sheets to identify those relatives who are still living, who might be able to help. It is important to contact the oldest living relatives first, since waiting too long may result in losing a valuable source by death.
Older people are often very interested in their family history and like to reminisce.
Don't be satisfied with one letter or one visit. Quite often the first contact stirs up memories for weeks. Wait a month or so for a second try. Be sure to record all dates and places even if they are just guesses. They can prove very valuable later.