This one is great for a family with 2 family figures-- 2 dads, a father and step-father, a father and grandfather, whatever it may be.
https://www.pinterest.com/pin/269301252688351562/
This one is tells what daddy was like as a child-- it's funny for kids to imagine their fathers as anything but a grown-up daddy!
https://www.pinterest.com/pin/269301252687798805/
This is a good Dad book for bedtime--
https://www.pinterest.com/pin/269301252687798803/
Playful scenes of daddies and their babies-- and the nicknames that result from playtime
https://www.pinterest.com/pin/269301252687798814/