Have you seen the book "Fitts Families (Fitts-Fitz-Fittz) A Genealogy" by Sylvia Fitts Getchell of New Market, NH, 606 pages mostly on the New England Fitts. It does cover the Fitts Families in other parts of the country but to a lesser degree. On page 252 has information on Alvin and Fannie and on facing page there is a photo of each. Fannie died 13 Oct. 1889 and Alvin married Delia Camp Fellows and there is a photo of them on following pages.
Good hunting,
Brady Fitts