War Department, Surgeon General’s Office, Army Medical Museum and Library, Washington, Jan. 31st. MY DEAR GORGAS: Your kind letter of January 22d was received a few days ago. I am very much obliged for the information concerning Santiago de las Vegas. I have made a copy of several of the enclosed papers and return them herewith with many thanks for the opportunity of seeing them. I would like to know in how many cases of y. f. since July 1, 1900, you have omitted disinfection of clothing. How many cases under observation in Havana since that time? There were five deaths I notice after that date and these probably cover say twenty cases. Can you give me the exact number of cases by months for 1900 and 1901? I want to make a curve for these years of cases to accompany my next article to be published in the _Journal of Hygiene_ (English).... Another thing. Can you possibly obtain from Dr. Guiteras, some eggs of stegomyia and send them to me dried on filter paper? I have no insects nor eggs at present, and am so very anxious to obtain some as soon as possible. Remember me very kindly to Mrs. Gorgas. With best wishes, Sincerely yours, WALTER REED. (17) War Department, Surgeon General’s Office, Army Medical Museum and Library, Washington, Feb. 4, 1902. MY DEAR GORGAS: Yours of January 31st is just to hand. The Army Examining Board of which I am a member is not now in session, but undoubtedly will be set at work just as soon as the school session ends, April 3d, and I should venture the opinion that the Board will remain in session until November 1st, except during a brief summer vacation in July and August. I hope that your friend will appear. Give him a note to me, or a general recommendation for the use of the Board, and I will see if I can’t soften the hearts of some of the stoniest-hearted members.... I hear that you are going to have a y. f. “picnic” down in Havana this month. Talk “right from the shoulder” to those South Americans, and make them begin the work of exterminating the disease in their respective countries. I think that Mexico is alright on this question. * * * * * Faithfully yours, REED. (18) War Department, Surgeon General’s Office, Army Medical Museum and Library, Washington, Feb. 12, 1902. MY DEAR GORGAS: