[2] His father, a naturalized US citizen from Germany, was a dealer in raw silk and wool, while his mother was a New York-born daughter of English immigrants.

[7] Local papers recorded ten-year-old Philip and his older brother Harry selling tickets for an amateur benefit performance.

[13] Lawrence Langner says that the Theater Guild came about by chance, when he ran into Moeller and Helen Westley in the basement cafe of the Brevoort Hotel on December 18, 1918.

[15] The plan they discussed encompassed a wholly professional company, run by an executive committee, to produce only long plays of merit, at a reasonably-priced mid-size theater.

The membership was identified as Moeller, Westley, Langner, Peters, and Myers, with Lee Simonsen, Ralph Roeder, Helen Freeman, and Justus Sheffield.