Mr. Liebeler. That is to say, you have not been able to refresh your recollection?
Mrs. Siegel. No.
Mr. Liebeler. And improve it at all?
Mrs. Siegel. No.
Mr. Liebeler. Since the——
Mrs. Siegel. No. I must have seen between 400 and 450 boys a year in those days. I don't remember.
Mr. Liebeler. Do you remember talking to his mother at all?
Mrs. Siegel. No; I do not. I don't even know if I saw her. I am terribly curious to see my report again.
Mr. Liebeler. How long do you know Dr. Hartogs?
Mrs. Siegel. Well, we were associated over a period of from 1952 to 1958—6 years.