I don't have any Hanks books, but is this the title you are looking for?
HANKSNew England branch of the Hanks family papers, by Caroline H. Hitchcock. 367p., typescript. 1938
Higginson does a reprint version of that, but not sure which, if any libraries have it.
The Hanks Family Of Virginia And Westward A Genealogical Record From The Early 1600s, Including Charts Of Families In Arkansas, The Carolinas, Georgia, Idaho, Illinois, Indiana, Iowa, Kentucky
Is another option that looks good, there is a used book dealer offering a copy but it is pricey. There are also a number of biographies about Nancy Hanks. Again, I don't have a copy of any of the above, hopefully someone else will.