The Henry C. Moses Building The following is a glimpse inside of the Henry C. Moses Building, before it was named for the beloved Headmaster ← The Gymnasium St. Agnes Chapel → The Henry C. Moses Building Trinity's Evolving Campus Trinity's Evolving Campus139-147 West 91st St.The New Trinity School, 1893Building PlansThe ClassroomChapelThe GymnasiumThe Henry C. Moses BuildingSt. Agnes ChapelThe AnnexHeadmaster Dann and a New VisionThe Building ProgramAthletic FacilitiesHenry C. MosesCampaign for TrinityConstruction PhotographsDedication CeremonyThe Hawley WingAlan R. HawleyThe West Side Urban Renewal ProjectThe Trinity FundGroundbreaking with Richard GartenConstruction PhotographsThe LibraryAthletic FacilitiesChapel - Auditorium