Letter from Thomas Gold to Dr Gordon MacDonald, Mitre Corporation, 1820 Dolly Madison Blvd., McLean, Virginia Lists various items; 1. Latest and final version of the Brontides paper, accpeted for Science 2. Report of occurrence in Black Tickle, will try to get a sample of the ground below burnt grass 3. The paper on the Rings of Uranus Asks him to write a nice complimentary letter for Dermott. He needs to get a visa and they need external statements tht he is not in competition with workers, but is unique. Suggests a sample letter. Aalso MacDonald was going to send him some informtion regarding depths of gas in Appalachia, in relation to depths of coal. Gold has a few examples, but is sure MacDonald can lay his hands on better ones, where lateral migration from a laer layer can be excluded. 15 February 1979