From Summary: "During 1925 the assumption of an isothermal atmosphere which was in general use as the standard for the calibration of altimeters in the United States was replaced by a standard atmosphere which assumes an altitude-temperature relation closely corresponding to the average of upper air observations at latitude 40 degrees in this country. The same standard atmosphere had already been adopted somewhat earlier in the United States as the aircraft performance standard. National Advisory Committee for Aeronautics Technical Reports nos. 147 and 218 give necessary constants, tables, and information. However, neither of these reports includes all of the tables required for the computation of actual altitudes nor those readily suitable for use in calibrating altimeters, since the altitude intervals for which data are given are not sufficiently small."

Document containing additional statistical, agricultural and livestock matter, with a supplement giving each Department of the State Government, including the Eleemosynary and Educational Institutions and the Judicial Department. It also gives the names of heads of the different State Departments and State Institutions, together with the number of employees and the appropriations for support of each.

This report contains the aerodynamic properties of the wing sections U.S.A. 5, U.S.A. 27, U.S.A. 35 A, U.S.A. 35 B, Clark Y, R.A.F. 15, and Gottingen 387, as determined at various Reynolds numbers up to an approximately full scale value in the variable density wind tunnel of the National Advisory Committee for Aeronautics. It is shown that the characteristics of the wings investigated are affected greatly and in a somewhat erratic manner by variation of the Reynolds number. In general there is a small increase in maximum lift and an appreciable decrease in drag at all lifts.

Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.

From Introduction: "This report describes the methods used and the results obtained in a series of experiments on the resistance that metal-mine airways offer to the flow of air."

Travis County Commissioners Court minutes from January 1927 to February 1930, documenting proceedings of county administrative court. Business transacted includes classification and expenditure of county funds, approval of claims, levy of taxes, care of paupers, construction and maintenance of public buildings and roads, management of other county works, calling of bids and letting of contracts, designation of election precincts, appointments of election judges, calling of elections, and approval of bonds of county officials. Arranged chronologically by date of proceeding.

Report containing information regarding "the construction and maintenance of overhead and underground electrical supply and communication lines" (p. ii).

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.

Daily newspaper from Amarillo, Texas that includes local, state, and national news along with advertising.

The almanac covers general topics about the state of Texas including statistics for individual counties, agriculture, expenditures, and weather, as well as discussions of legal, political and social issues of the time. A general index is on page 376.

Weekly African-American newspaper from Houston, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.

Fourth edition of the United States Electrical Safety Code.

Daily newspaper from Amarillo, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Cleburne, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Stillwater, Oklahoma that includes local, state, and national news along with advertising.

Report presenting testing in the variable density wind tunnel on two airship models known as the NPL Standardization Models, long and short. The resistance or shape coefficients were determined for each model through a range of Reynolds numbers. Further work is found to be necessary in the standardization of wind tunnels.

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Amarillo, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Amarillo, Texas that includes local, state, and national news along with advertising.