Mr. STOMBAUGH. These are the gray-black cotton fibers and the color didn't come out well on these in this instance because of time and color process limitations. Mr. EISENBERG. Just a second. You have a chart here--a photomicrograph--captioned "Microphotograph Showing Match Between Gray-Black Cotton Fibers From Butt Plate of Assassination Rifle, etc. and Gray-Black Cotton Fibers From Oswald's Shirt." Did you take these photographs or were they taken under your supervision? Mr. STOMBAUGH. Under my supervision. Mr. EISENBERG. May I have this admitted as 675? Mr. DULLES. 675, it will be admitted. (The item referred to was marked Commission Exhibit No. 675, and received in evidence.) Mr. STOMBAUGH. The same would apply to Exhibit 675 as to 674, with the exception of the color. The color on these is much darker and we tried up to last night to duplicate the exact color and this is the best I could come up with under the time and color process limitations. It took us about 4 hours to make a photograph such as this. Mr. EISENBERG. There is an apparent match of colors in the photograph---- Mr. STOMBAUGH. But there is one---- Mr. EISENBERG. I say, there is an apparent match in photographs, in color, or is that just my eyes deceiving me? Mr. STOMBAUGH. This one appears to be slightly lighter than this shade. Mr. EISENBERG. I see. Mr. STOMBAUGH. But actually they are both a gray black, almost black in color. Mr. EISENBERG. But under the microscope they were identical, and a different shade than what we see in Exhibit 675? Mr. STOMBAUGH. That is correct. 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? Mr. STOMBAUGH. All of these were made at approximately 400 diameters. Mr. EISENBERG. Did you find a color match here? Mr. STOMBAUGH. Yes; the color match of the dark blue cotton fibers shows rather well in this photograph, Exhibit 676. Mr. EISENBERG. Now there is also a violet-colored fiber running through the right-hand side of 676.