An article fro Aerospace Historian on the origins and life of Women Airforce Service Pilots in World War II, with an introduction from aviatrix and WASP flight instructor, Jacqueline Cochran.

Notes and Documents column including a narrative of a historical train trip through northern and eastern states, correspondence between the society's president and the letter's author regarding the making of the account, a chronicle of the history of the oldest boarding school operated in the United States called the Riverside Indian School, and an Oklahoma weather report.

Article illustrates how the Choctaw people combined traditional medical practices with those created by Europeans during a time where diseases spread rapidly and killed indiscriminately.

Article narrates the events that transpired at the signing of The Creek Treaty in 1866. Outlined within the treaty were provisions for land allotment within the Creek Nation and establishing federal courts within the territory. The treaty was signed shortly after the end of the Civil War.

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It has been known that the extracellular proteinase of Coccus P is found only in cultures grown in the presence of Ca{sup 2+}. It is now shown that this cation is required neither for synthesis, excretion, or activation of a zymogen nor as a prosthetic factor necessary for enzymatic activity. The only function of Ca{sup 2+} is to stabilize the active structure of the enzyme molecule, presumably by substituting for absence of S-S bridges. In the absence of Ca{sup 2+} , the excreted proteinase undergoes rapid autodigestion and, instead of the active protein, its hydrolytic products are accumulated in the culture fluid. In minimal medium and under conditions of enzyme stability [presence of Ca{sup 2+} and Ficoll (Pharmacia)], Coccus P accumulates the proteinase at a gradually reduced speed although the rate of cultural growth remains constant. It is shown that this decline in rate of accumulation is caused by the excreted proteinase itself, possibly acting on its own precursor emerging from the cell in a form susceptible to proteolytic attack and not amenable to Ca{sup 2+} protection. A proteinase precursor is actually demonstrable in a calciumless culture at the onset of the enzyme accumulation which follows Ca{sup 2+} addition. It …

The production of high energy (multi-GeV) proton beams by an electron ring accelerator is considered. Both the final energy and intensity of the proton beam depend on the choice of parameters for the electron ring. Possible sets of parameters, consistent with all the known requirements of ring stability, and which optimize the energy and (or) the intensity of the proton beam, are presented.

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The carcinogenic activity of the benzo[a]pyrene 1, the 7,12-dimethylbenz[a]anthracene 2 and the 3-methylcholanthrene 3 is suggested to be determine by the electrophilic attack of the active oxygen, induced by the hydroxylating enzyme systems, on the most reactive substituting carbon atom(s). The cationic intermediate(s) with the charge mainly localized on a complementary, interrelated position(s) of the hydroxyl substituted position(s) reacts further with the cellular nucleophiles. The electrophilic nature of the ultimate chemical carcinogens constitutes the common distinctive feature that correlates their different structures and allows us to understand their carcinogenicity. The formation of a covalent bond with the nucleophiles of the biological macromolecules, nucleic acids and proteins, appears to be the essential requirement in the primary process of carcinogenesis.

Article documents the history of printing in Oklahoma in celebration of the centennial anniversary of the first printing press being placed within the territory.

Di-tertiarybutylnitroxide (DTBN), which they have tried to use as a trapping agent to identify the species giving rise to the photo-induced EPR signals in photosynthetic materials, functions as a Hill reagent with spinach chloroplasts. Evidence is presented which indicates that the reduction of DTBN is affected by photosystem II of the electron transport system of spinach chloroplasts. The reduced form of DTBN, the hydroxylamine, undergoes a photo-oxidation with spinach chloroplasts. Possible explanations of this apparent inconsistency are presented. A product which could be ascribed to a chemical coupling reaction between the nitroxide and the radical species giving rise to the photo-induced EPR signals in spinach chloroplasts was not detected, even using radioactive tracer methods.

Article chronicles the establishment and history of the First Regiment of United States Dragoons, an elite regiment of mounted soldiers who patrolled the frontier.

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Article chronicles the importance of the first Thlewarle Mekko Sapkv Coko (House of Prayer) for the Creek Indians in Indian Territory. The Baptist church was a place of community and worship for the tribe during a time of reconstruction.

Article narrates the history of how two men, Carl C. Magee and Gerald A. Hale, created the parking meter to help Oklahoma City solve the problem with overcrowded parking lots. The article also details the impact their creation had on the world.

Article chronicles the history of St. Agnes Academy for the Choctaws, a mission school located in Choctaw Nation. The school was destroyed by a tornado in 1945.

A calculation is given of the radiated energy loss from a charged rod which moves at constant speed past an infinite set of parallel semi-infinite conducting plates of infinitesimal thickness, with the rod taken parallel to and at a fixed distance from the plate edges. The problem is analyzed using the Wiener-Hopf technique, and the resulting formulas are evaluated analytically in the limits of high rod speed and low rod speed, and compared with numerical evaluation over the full range of speeds.

Article narrates the many court cases tried inside of the Tobucksy County Courthouse, a building that was once the home to pioneer physician Dr. Daniel Morris Hailey. The building is now called the old Choctaw Indian Courthouse.

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Article chronicles the events that lead to the vast amount of land allotted to the Seminole people during the signing of the Seminole Treaty of 1866.

Article chronicles the creation and history of the Civilian Conservation Corps in Oklahoma. The program was created during the first hundred days of President Franklin D. Roosevelt's New Deal as a means to protect the conservation of parks and camps.

Article chronicles the history of coal mines in Oklahoma and the accompanying disasters that killed many miners.