1. Over Periscope pond: letters from two American girls in Paris, October 1916-January 1918 Author(s): Root, Esther Sayles, authorCrocker, Marjorie, author Publication: Boston : Houghton Mifflin Company, 1918 Subject(s): Relief WorkRefugeesWorld War IFranceUnited StatesRoot, Esther Sayles.Crocker, Marjorie.