Postcard: See Me for Subscriptions.

This black and white printed postcard depicts an advertisement for a subscription agent. Printed text fills the front of the card. Handwriting is on the back of the card.https://scholars.fhsu.edu/tj_postcards/1725/thumbnail.jp

President & Mrs. Dwight D. Eisenhower to Senator & Mrs. James O. Eastland, [March 1957]

Copy printed invitation from President & Mrs. Eisenhower to Senator and Mrs. Eastland, re: White House reception on 5 March 1957. Envelope. Original removed to VIP Restricted Access location.https://egrove.olemiss.edu/joecorr_c/1011/thumbnail.jp

President & Mrs. Dwight D. Eisenhower to Senator & Mrs. James O. Eastland, [January 1955]

Copy printed invitation from President and Mrs. Eisenhower to Senator and Mrs. Eastland, re: White House reception on 14 January 1955. Envelope. Original removed to VIP Restricted Access location.https://egrove.olemiss.edu/joecorr_c/1009/thumbnail.jp

Letter, Dwight D. Eisenhower to R. Gerald MCMurtry, September 16, 1960

This typed letter, dated September 16, 1960, is written from Dwight D. Eisenhower to R. Gerald McMurtry congratulating Dr. McMurtry on the many successes of the Lincoln Sesquicentennial Commission during 1959. The letter lists some of the accomplishments and expresses appreciation for their service. The letter is typed on The White House letterhead and includes an envelope postmarked Washington, D. C., September 20, 1960.https://scholarsjunction.msstate.edu/fvw-manuscripts-original-manuscripts/1141/thumbnail.jp

President Dwight D. Eisenhower to Senator James O. Eastland, 2 February 1969

Copy typed letter signed dated 2 February 1960 from Eisenhower to Eastland, re: 26 January letter from Eastland and colleagues. Original removed to VIP Restricted Access Location. Attached: carbon typed letter dated 25 January 1960 from Eastland to Eisenhower, re: referral of cotton textile import problems to Tariff Commission.https://egrove.olemiss.edu/joecorr_c/1002/thumbnail.jp

Optical Budgeting for LUVOIR

Future large astronomical telescopes in space will have architectures that will have complex and demanding requirements to meet the science goals. The Large UV/Optical/IR Surveyor (LUVOIR) mission concept being assessed by the NASA/Goddard Space Flight Center is expected to be 8 to 16 meters in diameter, have a segmented primary mirror, active control, and be diffraction limited at a wavelength of 500 nanometers. The optical stability is expected to be in the picometer range for minutes to hours. Architecture studies to support the NASA Science and Technology Definition teams (STDTs) are underway to evaluate systems performance. A wave front error budget has been developed to help define the technology needs and assess performance. The budget includes both spatial and temporal domain aspects for the active, adaptive and passive elements in the optical design

Active X-ray Optics for Generation-X, the Next High Resolution X-ray Observatory

X-rays provide one of the few bands through which we can study the epoch of reionization, when the first galaxies, black holes and stars were born. To reach the sensitivity required to image these first discrete objects in the universe needs a major advance in X-ray optics. Generation-X (Gen-X) is currently the only X-ray astronomy mission concept that addresses this goal. Gen-X aims to improve substantially on the Chandra angular resolution and to do so with substantially larger effective area. These two goals can only be met if a mirror technology can be developed that yields high angular resolution at much lower mass/unit area than the Chandra optics, matching that of Constellation-X (Con-X). We describe an approach to this goal based on active X-ray optics that correct the mid-frequency departures from an ideal Wolter optic on-orbit. We concentrate on the problems of sensing figure errors, calculating the corrections required, and applying those corrections. The time needed to make this in-flight calibration is reasonable. A laboratory version of these optics has already been developed by others and is successfully operating at synchrotron light sources. With only a moderate investment in these optics the goals of Gen-X resolution can be realized.Comment: Enhanced version of SPIE presentation. 11 pages, 5 figure

Eisenhower's Army Convoy Notes 11-3-1919: Rock Island Arsenal

Public Note: The original format of this document was an active HTML page(s) located under https://www.fhwa.dot.gov/infrastructure/history.cfm. The Federal Highway Administration converted the HTML page(s) into an Adobe\uae Acrobat\uae PDF file to preserve and support reuse of the information it contained. The intellectual content of this PDF is an authentic capture of the original HTML file. Hyperlinks and other functions of the HTML webpage may have been lost, and this version of the content may not fully work with screen reading software.Report by Dwight D. Eisenhower in 1919 as a Lieutenant Colonel and his experiences traveling on the \u201cTrans-Continental Motor Truck Trip\u201d. Details of his trip includes the efficiency of the vehicle convoy fared traveling cross country, and the difficulties experienced. A succinct overview of the road conditions on the route traveled on are given as well