Dr. L. H. CAMARA-LOPESCAIXA POSTAL 605RIBEIRAO PRETO, S. P., BRASIL3rd November 1967Dr.Karel B.Asolon2714 West 10th StreetAmarillo, Texas, U.S.A.Dear colleague Doctor Absolon,I am receiving the reprints you sent me today. Thankyou for this kind sending.As I told you before I devote most of my leisure timeto the reading of history of medicine. I always was a good readerthat in the last years was so to say forced to stay in a chair andSpare his strengh for the working hours to come. By doing so I deve-lopped a good library on the history of medicine which delights mea lot. As a surgeon I have many books written by the surgeons of thepast, among them, some of Billroth himself. I also have travellingalong the old world and visited some of his places of work and sawinclusive the specimen of his first gastric operation, in Vienna,receiving a photo of it. If you will this material for your bookwith the necessary explanations it will be a pleasure to me to helpyou. As you know very well, Theodor had a rich, colorful and variedcorrespondence since his youth with many outstanding people of hisfuture life and I have many of these letters.Concerning his brother in Rio, I will try to do my bestfor you. I just ask you some time for that.Very Sincerely yours,Please answer me.