Mr. Eisenberg. In all these cases did you make your determination of color and match under the microscope, or by use of the photographs?
Mr. Stombaugh. Under the microscope.
Mr. Eisenberg. And these are illustrative and prepared for the Commission's use?
Mr. Stombaugh. Yes, sir.
Mr. Eisenberg. Now, you have a chart of photomicrograph captioned "Match Between Dark Blue Cotton Fibers From Butt Plate of Assassination Rifle, etc." Did you prepare these photographs or were they prepared under your supervision?
Mr. Stombaugh. Under my supervision.
Mr. Eisenberg. May I have these received as Exhibit 676?
Mr. Dulles. 676.
(The item referred to was marked Commission Exhibit No. 676, and was received in evidence.)
Mr. Eisenberg. What is the magnification of 675 and 676, by the way?