"This report is the second phase of a broad program of study of the transient motions of helicopters in autorotative flight. The first phase (reference 1) dealt with the steady-state condition of autorotative vertical descent. This report is concerned with the the transition from the steady condition of hovering to the steady autorotative descent" (p. 1).

Photograph taken at the original location of Princeton Film Center in New Jersey. Original caption: "150-acre farm, 5 miles from Princeton on Carter Road / Future location of the Princeton Film Center--1949."

A photograph postcard showing the Pennsylvania Railroad (PRR) 4755 & 4714, electric locomotives, southbound, and 4902 electric locomotive, northbound, Trenton, NJ, 125 cars total, 30 mph.

A photograph postcard showing the Pennsylvania Railroad (PRR) 4849, 4-6-6-4 (class GG-1), electric locomotive on passenger train, the noon "Clocker" from New York, leaving Trenton, NJ, 15 cars, 50 mph.

A photograph postcard showing the Pennsylvania Railroad (PRR) 4854, 4-6-6-4 (class GG-1), electric locomotive on passenger train No. 125, the "Executive", leaving Trenton, NJ, 15 cars, 30 mph.

A photograph postcard showing the Reading Railroad (RDG) 117, 4-6-2, streamlined steam loco, silver & blue, on passenger train No. 607, "The Crusader" at West Trenton, NJ, 5 cars, 60 mph.

Letter from Harris L. Kempner to Albert Einstein declining his invitation to the luncheon held by the Emergency Committee of Atomic Scientists on November 17.

Letter from Albert Einstein to Harris Leon Kempner inviting him to attend a meeting of a "small group of representative citizens" to inform them of the Emergency Committee of Atomic Scientists' program and ask for their financial support.

Letter from Albert Einstein to Harris L. Kempner thanking him for the gift to the committee.

Telegram sent by Albert Einstein to Harris Kempner discussing his request for their support of scientists, specifically the Emergency Committee of Atomic Scientists, and explains the crisis of humanity that they face.

Letter from Harris L. Kempner to Albert Einstein acknowledging a telegram and forwarding a check as contribution.

Letter from Chauncey D. Leake to I. H. Kempner discussing the "Princeton Plan" for faculty housing with Mr. Kempner. Leake is familiar with the plan because it was used when he was a student at Princeton. The plan involves private investors building housing on university land. The project is financed through bonds and the property is eventually transferred to the university. Leake believes the plan would be worthwhile for the University of Texas.

Letter from I. H. Kempner to Chauncey D. Leake discussing the "Princeton Plan" for faculty housing. He describes the plan as one where a group of investors acquires land and builds housing. A corporation is formed that issues bonds to finance the project. The property taxes are exempt, and any profits are used to pay off the bonds. Eventually, the property is transferred to the city. He asks Dr. Leake if he can find more details about the plan.

Letter from WASP Cornelia Yerkes discussing a ferrying trip and returning by train. Written on Hotel John Marshal (Richmond) stationary.

Letter from D. W. Kempner to Lt. Lloyd Hilton Smith thanking Smith for the book he sent. Lt. Smith's business card is attached.

The purpose of this survey is to evaluate the contribution that the Westminster Choir movement has made to choral music in the United States today. It is hoped after the contributions have been stated by the investigator that the important position Westminster Choir College is occupying will be better understood.