This project addressed two main goals and one much smaller one. The main goals were (1) to improve the significance, reliability and information content in high-resolution NMR (nuclear magnetic resonance) characterization of coal samples and (2) to develop chemically informative NMR imaging techniques for coal. The minor goal was to explore advanced features of dynamic nuclear polarization (DNP) as a technique for coal characterization; this included the development of two DNP probes and the examination of DNP characteristics of various carbonaceous samples, including coals. {sup 13}C NMR advances for coal depended on large-sample MAS devices, employing either cross-polarization (CP) or direct polarization (DP) approaches. CP and DP spin dynamics and their relationships to quantitation and spin counting were elucidated. {sup 1}H NMR studies, based on CRAMPS, dipolar dephasing and saturation with perdeuteropyridine, led to a {sup 1}H NMR-based elucidation of chemical functionality in coal. {sup 1}H and {sup 13}C NMR imaging techniques, based on magic-angle spinning and rotating magnetic field gradients, were developed for introducing chemical shift information (hence, chemical detail) into the spatial imaging of coal. The TREV multiple-pulse sequence was found to be useful in the {sup 1}H CRAMPS imaging of samples like coal.

A photograph postcard showing Colorado & Southern (C&S) 68, 2-8-0 (narrow gauge), on mixed freight with 69 on rear, west of Arvada, CO, 10 cars, 15 mph.

A photograph print showing Colorado & Southern (C&S) 69, 2-8-0, narrow gauge, Denver, CO.

A photograph print showing Colorado & Southern (C&S) passenger & freight depot, Idaho Springs, CO.

A photograph print showing Colorado & Southern (C&S) narrow gauge train with gravel-filled hoppers.

A photograph print showing Colorado & Southern (C&S) narrow gauge train mixed freight train, second locomotive near rear of train.

A photograph print showing Denver & Rio Grande Western (DRGW) 470, 2-8-2, on the last passenger train to Santa Fe, NM, Antonito, CO.

A photograph print showing Denver & Rio Grande Western (DRGW) 271, 2-8-0 (BLW, class C-16), narrow gauge, Durango, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 271, 2-8-0, narrow gauge, Durango, CO.

A photograph print showing Denver & Rio Grande Western (DRGW) 318, 2-8-0 (BLW, class C-18), narrow gauge, Montrose, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 318, 2-8-0 (BLW, class C-18), at engine house in Montrose, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 454, 2-8-2, narrow gauge, Montrose, CO. ("Salida Light!!")

A photograph print showing Denver & Rio Grande Western (DRGW) 670, 2-8-0, Denver CO. [see also 2008.008.6765]

A photograph negative showing Denver & Rio Grande Western (DRGW) 683, 2-8-0, narrow gauge, Denver CO.

A photograph print showing Denver & Rio Grande Western (DRGW) 3413, 2-8-8-2, Denver, CO.

A photograph print showing Denver & Rio Grande Western (DRGW) 3552, 2-8-8-2, Minturn, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 3604, 2-8-8-2, on eastbound mixed freight, headed downgrade, just east of Coal Creek, CO, 25 mph.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 3617, 2-8-8-2, on westbound mixed freight extra, with helper locomotive on rear, "climbing toward the Continental Divide", above Fireclay, CO.

A photograph print showing Denver & Rio Grande Western (DRGW) X-370 work train car, with 0460 passenger car in background, held in readiness at Salida, CO.

A photograph postcard showing Florence & Ripple Creek (F & CC) 20 "Portland" narrow gauge 4-6-0, after being repainted at South Alamosa, CO.

A photograph postcard showing the Great Western (GWR) 2, 2-8-0, pulling 10 cars of sugar beets toward Loveland, CO, 30 mph.

Letter from Eduardo Morga, LULAC Nation President, to Joseph Coors, President of Adolph Coors Company, dated August 30, 1977. The letter discusses recent communications with Coors regarding Joe Benites and use of LULAC and its members in Coors commercials. Attached to the letter are a "Boycott Coors Beer!" flyer and a LULAC press release stating the Coors Company is using LULAC's name without consent and the organization does not support their practices.

Letter from Philip Houtz expressing his gratitude for gift contributions by members of Kempner Family.

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