Seth Austin: Former Representative Philip Hayes dies. 20. Dezember 2023, archiviert vom Original am 21. Dezember 2023; abgerufen am 21. Dezember 2023 (amerikanisches Englisch): „Phillip Hayes served as deputy prosecuting attorney in Vanderburgh County from 1967 to 1968 and became a member of the Indiana State senate from 1971 to 1974. Hayes was elected as a Democrat to the 94th Congress in 1975, but was not a candidate for reelection in 1976.“
Seth Austin: Former Representative Philip Hayes dies. 20. Dezember 2023, archiviert vom Original am 21. Dezember 2023; abgerufen am 21. Dezember 2023 (amerikanisches Englisch): „Phillip Hayes served as deputy prosecuting attorney in Vanderburgh County from 1967 to 1968 and became a member of the Indiana State senate from 1971 to 1974. Hayes was elected as a Democrat to the 94th Congress in 1975, but was not a candidate for reelection in 1976.“