Newsletter published by the 12th Armored Division Association, discussing news related to the activities of the U.S. Army unit and updates on previous members of the division.

Letter from Margaret Tamplin to Rigdon Edwards discussing getting back from his honeymoon, tax work, and offering his parachute bag for the museum.

Newsletter published by the 12th Armored Division Association, discussing news related to the activities of the U.S. Army unit and updates on previous members of the division.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

The problem of visibility reduction in the Grand Canyon due to fine organic aerosol particles in the atmosphere has become an area of increased environmental concern. Aerosol particles can be derived from many emission sources. In this report, we focus on identifying organic aerosols derived from common vegetation in the Grand Canyon. These aerosols are expected to be significant contributors to the total atmospheric organic aerosol content. Aerosol samples from living vegetation were collected by resuspension of surface wax and resin components liberated from the leaves of vegetation common to areas of the Grand Canyon. The samples were analyzed using high-resolution gas chromatography/mass spectrometry (GC/MS). Probable identification of compounds was made by comparison of sample spectra with National Institute of Standards and Technology (NIST) mass spectral references and positive identification of compounds was made when possible by comparison with authentic standards as well as NIST references. Using these references, we have been able to positively identify the presence of n-alkane and n-alkanoic acid homolog series in the surface waxes of the vegetation sampled. Several monoterpenes, sesquiterpenes, and diterpenes were identified also as possible biogenic aerosols which may contribute to the total organic aerosol abundance leading to visibility reduction in the …

Letter from R. G. Schurig of Mesa, Arizona to Rosa Walston Latimer of Lubbock, Texas with information about his father, who was a chef and baker in the Harvey House at Gainesville, Texas.

Photograph of a vintage Cadillac propped up on a tow dolly in a desert. A child uses a slide at a spaceship-shaped playground to the left of the automobile. A highway passes by in the background. There are large cacti scattered across the desert. [1992, Arizona]

Photograph of a telephone pole at the bottom of a sandy hill. Trees stand to the left of the telephone pole where dry grass sparsely covers the landscape. [1992, Arizona]

Photograph of a curving road near a cliffside. The road ends at a stop sign and intercedes with a highway. [1992, Arizona]

Catalog for the "Counter Colón-ialismo" exhibit including biographies of participating artists, descriptions of the art pieces in the exhibit, and other information about the series.

From abstract: The information presented in this report supplements the geologic map of the Fife Peak quadrangle and supports ongoing investigations of the evolution of the Turkey Creek caldera.

From abstract: Information in this report supplements the geologic map of the Rustler Park quadrangle and supports ongoing investigations of the Turkey Creek caldera.

From introduction: This study examines mid-Tertiary mineralization of the area in the context of both detachment and basin-range faulting.

Pamphlet welcoming WASP to the 1992 San Antonio Reunion with letters and a schedule of events.