This is the second of three episodes to feature all three of President Bartlet's daughters. The other two are The Dogs of War (2003) and Requiem (2006).
The title refers to an Arabic phrase: The father of daughters, usually referring to a man who has 3 or more daughters and no sons.
CJ's secret service codename is Flamingo, Zoey's is Book Bag, Sam Seaborn's was Princeton, and the President is either Eagle or Liberty (depending on the episode). Bartlet's grandson Gus (in the episode "Abu el Banat") is Tonka.
President Bartlet shares Secret Service code name with President Clinton - Eagle.
This is the second time we see Gus Westin (Michael Krepack), Bartlet (Martin Sheen)'s grandson, but the first time the character gets any real screen time or lines. The first time we see him is in 7A WF 83429 (2003).