Progression in my work is steady; the upper classes are so full as to retard our immediate advancement. Our class is an exceptionally good one. I changed from the evening to the morning class some days ago, and I find it was a good move. The morning class is better, and advances faster. I am reading all the literature on aviation that is to be had about camp. I wish you would communicate with the M. I. T. Aviation Department and get from them a list of the books that they are using there in the study of aviation. From this list strike out _The Aeroplane Speaks_ by Barber, and _Military Aeroplanes_ by G. C. Loening; also strike from the list all books published before 1915, and from the remainder you can judge what will be of use to me. They should not be so elementary as to be a waste of time, nor so technical from a mathematical standpoint as to be boresome. Compact, reliable, up-to-date as possible information is what I want. If any of these seem worth sending, do them up in separate bundles and mail them at intervals of three or four days apart to prevent their all being lost. The less bulky, the more practical for my use. Mail these books to me—C/O _Mr. Van Rensselaer Lansingh, Technology Club of Paris, 7 Rue Anatole de la Forge, Paris, France_. Mr. Lansingh keeps in constant touch with “Tech” students and communicates with their parents and with the Institute in case of accident. I will send my films to him and he will keep them after development. They are charged to my account and a set of prints returned to me. I will forward these prints to you. The films will be filed at the “Tech” Club of Paris. Any mail or cables sent to that address will be immediately forwarded to me, entailing about two days’ delay. I have opened a checking account, and deposited 1,000 francs with the Guaranty Trust Company of New York. _August 14, 1917._ DEAR LITTLE MOTHER: Nothing much has happened lately, so I have not been moved to write. You will remember I told you about getting a _marraine_; how she was born in Illinois, has two married daughters, lives in her country home at present, but will be in Paris during the winter months. Well, in her second letter she asked me if she could send me tobacco or anything else I might need, so I told her to send me candied fruit and golf stockings. They arrived yesterday. Say, but that fruit was good, and the stockings were the best I ever have seen. Dark brown, with a fancy top—not too brightly colored, of light and dark green. They are most too good to wear around here with my old khaki suit.