First I will answer your question about the book, I am sure the CD would be just qas good as the book, HOWEVER...neither one of them will be indexed.... The book is 959 pages and without an index it is hard to find anyone without reading it cover to cover.Now the good news is that at one time THe Pejepscot Historical Society, 159 Maine Street, Brunswick, Maine 04011, did sell a paper back Index that they published in 1985. I do not know if they still have copies available or not. You might check with them about that.
I can tell you though that every Potter/Dunlap you mentioned above is on one page #848 which will follow shortly.
First...DUNLAP....page #832..History of Brunswick, Topsham & Harpswell
" Rev. Robert Dunlap, the ancestor of all the Brunswick Dunlaps, was born inIreland, in the county of Antrim, Aug. 1715, came to America, 1736, and to Brunswick in 1747. He marriedJane Allison, who was born 1711 and died in Brunswick 31 March 1797. HIs mothers maiden name was Nelson. The family is of Scotch- Irish descent. Children were: JOHN, b. in Dracut, June 19 1737; ELIZABETH b. in Nobleboro Me, in 1742 n, Deacon Andrew Dunning; SAMUEL, b. in Boothbay, in 1745, d. in Brunswick, July 28 1836; ROBERT, b, In Newcastle in 1747, was shipwrecked and lost on Hampton Reach Dec 25, 1776. IN 1747; JANE b. Brunswick in 1749; HUGH b. 1751.
ROBERT DUNLAP, the ancestor of the Topsham Dunlaps, came from Ireland about 1730 when his Only son John was nine years of age. Other children were JANE m. Daniel Eaton of Brunswick; MARGARET , m. James POTTER, the eldest. "
I am gong to post this now and come back later and give you the Potter information that I mentioned above, as this is a lot for one posting.