Mr. Frazier. There are a number of fairly good texts.
The basic one, originally published in 1936, is by Maj. Julian S. Hatcher, who later, as a general, rewrote his book "Firearms Investigation, Identification, and Evidence."
There are many other books published on the subject.
Mr. Eisenberg. May I ask that this person be accepted as a qualified witness on firearms?
The Chairman. Yes, indeed.
Mr. Eisenberg. Mr. Frazier, I now hand you a rifle marked Commission Exhibit 139.
Are you familiar with this weapon?
Mr. Frazier. Yes, I am.
Mr. Eisenberg. And do you recognize it by serial number or by your mark?
Mr. Frazier. By serial number on the barrel, and by my initials which appear on various parts of the weapon.