Letter from D. W. Kempner to Mrs. David F. Weston discussing about the difficulties to attend the wedding and congratulating Harris for winning the presidency elections of Young Charterites.

Letter from Harris Leon Kempner to Harris K. Weston discussing his schedule to match it with the wedding activities.

Transcript of an interview with UNT professor Stan Ingman about his experiences growing up in cities that with pollution and environmental degradation, his education, and his work in the Rehabilitation and Health Services Department to develop curricula connecting the well-being of people to the health of their environments.

From Introduction: "The difficulties experienced in cooling the exhaust-valve seats of the rear-row cylinders have been overcome to a considerable extent by improving the mixture distribution through application of the injection impeller (reference 1) and by augmenting the flow of cooling air to the critical baffles (reference 2). Flight tests of this airplane (reference 3) indicated that the temperatures of exhaust-valve seats on rear-row cylinders were markedly lowered by these modifications and that airplane range, altitude, and gross weight previously limited by these temperatures could be greatly increased."