The constitution of the plutonium-copper binary alloy as determined by differential thermal analysis is presented. The system is characterized by two congruent melting compounds, PuCu2 (m.p. 865 degrees C.) and Pu4Cu17 (m.p. 954 degrees C.); two incongruent melting compounds, PuCu4 (m.p. 906 degrees C.) and Pu2Cu11 (m.p. 926 degrees C.); three eutectics, 96 atom per cent copper (m.p. 626 degrees), 70.5 atom per cent copper (m.p. 849 degrees C.), and 91 atom per cent copper (m.p. 881 degrees C.); and two peritectics at 75 atom per cent (m.p. 906 degrees C.) and 85.5 atom per cent (m.p. 926 degrees C.). Solid solution was found above 97 atom per cent plutonium. The apparatus, the method of investigation, and the binary alloy phase diagram is discussed.

Article reprinted from the Texas State Journal of Medicine, discussing issues in medical education, such as a recent decline in applicants, teacher shortage, finances, and surgeon training.

Article explores the history of "Big Jake's Crossing," a way station on the Washita River where the author's father, Mr. G. W. Miller, set up a ferry for the use of travelers. Bess Rogers offers her own personal recollections of the time and frontier life.

Article gives a brief history of the Daugherty Ranch, established in the Muscogee (Creek) Nation by James Monroe Daugherty. Ella M. Robinson describes the cattleman's journey, the extent of his holdings, and the success his met in Indian Territory.

Article describes the life and work of Fred L. Wenner, a reporter who came to Oklahoma Territory for the 1889 land run. Mary E. Newbern discusses the events Wenner covered and the development he observed in Oklahoma's early years.

Article describes the life and career of Joe Kagey. A. M. Gibson specifically focuses on his contributions at the Seneca Indian School and to the history of education of American Indian youth.

Article provides a sketch of the career and family of Maria Tallchief, Oklahoma ballerina of Osage descent. Frank F. Finney, Sr. discusses the origin of the Tallchief name and Maria's road to success.

Article describes the life and memories of Harriet Patrick Gilstrap, a pioneer teacher who provides a personal narrative here of her time teaching on the frontier and working with the Sac and Fox Agency.

Article discusses the history of Billy McGinty's Cowboy Band and radio broadcasting in Ripley, Oklahoma. Leslie A. McRill includes excerpts of transcripts of broadcasts that included the band's music and provided information about Billy.

Column documenting biographical information about Oklahomans who have died, including Indian Boarding School Superintendent Eva Zerline Lewers and community leader Lou Irion Clarke.

Article provides historical context to the Indian removal treaties of the early nineteenth century and focuses particularly on negotiations with the Choctaw Nation. Arthur H. DeRosier discusses how the Choctaw allied with the United States government in previous conflicts, and the way their removal was debated by government officials.

Article highlights the idea of abolitionist sentiment being present in the Choctaw Nation pre-Civil War era and the discussion published in newspapers about missionaries supporting the anti-slavery movement.

Notes and Documents column including documents about recollections of Oklahoma Territorial courts and laws and about a program commemorating the erection of Oklahoma historical markers at the land run lines of 1889 and 1893.

This section includes the minutes of quarterly meeting of the Board of Directors of the Oklahoma Historical Society that was held on January 28, 1960.

Article describes the work of Catholic priest Reverend Urban de Hasque among the peoples of Indian Territory. Velma Nieberding explores the reverend's involvement in "The Sacrificial Wine Case," his work as a Chaplain in the U.S. Army, the churches he built in Oklahoma, and the way Oklahoma honors his passing.

Article provides a personal narrative of Fannie L. Eisele, whose family immigrated from Germany and became homesteaders of Oklahoma Territory. Eisele describes her life on the frontier, farming duties, and the growth of towns in the area.

Article discusses the diplomatic relations carried out by Oklahoma humorist Will Rogers and the juxtaposition of his isolationist beliefs with his humanitarianism. I. E. Cadenhead, Jr. explores the social commentator's trips to Mexico and his opinions about the relationship between the U.S. and Latin America.

Article from the April 1960 issue of the Texas State Journal of Medicine providing biographical information about Dr. May Owen, the first woman president of the Texas Medical Association.

Draft of a journal article about Dr. May Owen's election to President of the Texas Medical Association. The article discusses Dr. Owen's life, career, and accomplishments.

The viscosity of a liquid plutonium-iron eutectic alloy, which contains 9.5 atom per cent iron and melts at 411 degrees C, was determined up to 808 degrees C at Mound Laboratory by an oscillating cup viscosimeter. This type of apparatus employed a right-circular cylindrical cup containing the liquid under investigation attached to a torsion fiber. The dampening effect of the liquid upon the normal oscillations of the pendululm was a function of the viscosity of the liquid. The amplitudes of the oscillations of the pendulum were measured by a photographic technique. The periods of the oscillations were determined by an automatic timing mechanism. The reliability of the viscosimeter was demonstrated by following the expected function of the viscosity of liquid lead and bismuth over a larger temperature range than was previously reported.

Object of this paper is to present preliminary results of experiments in Hanford in-reactor loops to determine if exposure to neutrons will increase corrosion rates of Al alloys, Zy-2, and 304 stainless steel. Results were negligible or no corrosion.

The results presented here have shown that the spectral signature of absorption in a cloudy layer could be duplicated (except for the 1.06 {micro}m region) with a rather sophisticated radiative transfer model, if the absorption by both aerosol and cloud droplets was enhanced. In the case of aerosol, highly absorbing (imaginary part of refractive index between 0.1 and 0.01), small (2 - 5 nm) particles dramatically improved the match between observations and model computations. Duplication of the observed cloud absorption required a thin layer of drizzle (large droplets). The only feature remaining unexplained at this time is the enhanced absorption at 1.06 {micro}m. These results are only based on one day of observations and need to be verified. This study suggests the need for additional co-located broadband and spectral observations in clear and cloudy sky conditions in different atmospheric regimes. In-situ aerosol and cloud droplet microphysical measurements will be crucial to unravel the role of these particles in the ''enhanced absorption'' issue. Finally, accurate absorption measurements are needed at 1.06 {micro}m to understand observed absorption in that spectral region.

Article describes the events of the Battle of Chustenahlah, a battle waged between Confederate troops led by Colonel James McIntosh and Colonel D. H. Cooper and a Union faction of the Muscogee (Creek) Nation led by Opothleyohola near Hominy Creek in Osage County.

Article describes the experiences and work of the "covered wagon geologist" Charles N. Gould. Mildred Armor Frizzell provides context to excerpts of the pioneer's autobiography, where he discussed his work conducting geological surveys and teaching at the University of Oklahoma.