If you are creating your book by hand, i.e. without using a genealogy database, you will have to select where to place the photos for maximum effect. A chronological display of photos interspersed in a narrative report is particularly effective. For instance:

The exact time or place of Isaac Allerton's birth is not at present known to his descendants in the United States...He was born between the years 1583 and 1585, and resided at London for some time prior to moving to Holland, in 1609. It is said, however, that he was about twenty-six years old when he went to Holland and about thirty-seven when he came to Plymouth. The records of St. Dionis Backchurch, London, give the marriage of Edward Allerton, of that parish, to Rose Davis, of St. Peter's, Cornhill, 14 February, 1579-80.

For this text, which is from a book on Isaac Allerton, you might want to include a historic map image of London of the period, enlarged to show the parish area. Another graphic might show what a gentleman of the time looked like-class barriers were very strong, and the Allerton family was considered wealthy, so it's safe to assume that they conformed to the styles of the day.

Their original design had been to make their settlement near the mouth of the Hudson, and accordingly they put about at once to the south, but soon found themselves entangled in the shoals of that dangerous coast, and being all of them, especially the women and children, heartily sick of confinement within the narrow limits of the little vessel, the desire to be once more on land became too strong to be resisted.