A. Nathan Darby's Affidavit
The following sworn affidavit was given by fingerprint expert A. Nathan Darby this past spring.
Those following recent developments in the JFK case will recall that Darby, who holds certification by the Internal Association for Identification, concluded that previously unidentified fingerprints taken from cartons on the sixth floor of the Texas School Book Depository on November 22, 1963, were those of Malcolm E. "Mac" Wallace, a convicted killer with ties to Lyndon Johnson. (See Fair Play #23, July-August 1998.)
Darby's identification was made "blindly" --- that is, without his knowing the identity of Wallace, or of the implications of naming him. After making the ID and learning all that was involved, however, Mr. Darby stuck to his conclusions.
Thanks to Walt Brown and JFK/Deep Politics Quarterly for a copy of this affidavit.
9 March 1998
THE STATE OF TEXAS
Affidavit
County of Travis
- My name is A. Nathan Darby. I am a resident of Austin, Texas, and I am fully competent to make this affidavit.
- I have been active in law enforcement for many years, starting with the Texas
Department of public Safety as a State Trooper in 1938. I then served with the Austin, Texas
Police Department from October 1940, and including my military service, I was with the Austin
Police Department until my retirement in August 1979. During that period of service, I rose to the
rank of Lieutenant-Commander. I am presently an expert in fingerprint identification, and I hold
the designation of Certified Latent Fingerprint Examiner (#78-468), which is issued by the Internal Association for Identification, pursuant to the attached Exhibit DAN #1.
- I first became interested in fingerprint work in 1942. My direct work in fingerprint
identification began soon after, during my military service. I joined the U.S. Army in October
1943 and graduated from Officer Candidate School as a lieutenant in February 1945. I was
immediately put in charge of preparing a fingerprint identification system for the Philippine
Commonwealth. For my work of setting up their Central Fingerprint Bureau, I was awarded the
Philippine Military Merit Medal, the Philippine Commonwealth's highest non-combat award for
foreign military personnel. The United States Army also awarded me the Army Commendation
Medal. This achievement was further recognized in the 1946 textbook, Lectures in Fingerprints by
Fred C. Luchico, then Chief of the Identification Division with the Department of Justice, where he
states that I "provided a modern, current, and complete fingerprint file for the Philippine
Commonwealth." By 1946 I had risen to the rank of Captain. When my tour of Duty was
completed in the Philippines, I returned to the Austin Police Department in November 1946.
- On 1 January 1948 I was promoted to sergeant and assigned to the Identification Section
of the Austin Police Department. On 7 July 1953 I was promoted to lieutenant. In 1956, I was
made supervisor of the four employees of Identification and Criminal Records Section of the
Austin Police Department. At this time I handled the classification of 176,000 cards and expanded
the section to fourteen employees, training and supervising all personnel. In 1970, I worked on
advanced record-keeping with the Kodak Miracode system and developed the fingerprint and
photograph coding method for the system. During this time I also served on the board of directors
of the Texas Division of the International Association for Identification. I hold an Advanced
Certificate in Law Enforcement and an Instructor Certificate from the Texas Commission on Law
Enforcement. I have been a member of the Texas Division of the International Association for
Identification since November, 1946.
- Since 1949, I have testified in numerous cases in the State and Federal Courts about
fingerprint identification. This testimony included the preparation of latent charts as exhibits.
There was never a mistrial or appeal based on my testimony. Attached is Exhibit DAN#2. This
exhibit shows the opinions of two District Judges, Travis County, Texas regarding my testimony
experience.
...
- Fingerprints are an important part of law enforcement because no two prints are alike.
Although no person has been able to calculate the likelihood of a mismatch with statistical certainty,
the courts accept the admissibility of evidence from fingerprints. Human fingerprints are from
unique ridges, which are useful for gripping and holding. An inked fingerprint is the reproduction
of the ridges of the finger. An inked fingerprint is provided by putting black ink on the finger and
then placing the finger on a suitable contrasting background surface, such as white paper. A latent
fingerprint is the production of ridges when the finger has been placed on a surface. The ridges of
the finger leave a residue, body fluids, and chemicals on the surface touched. The latent prints are
recovered and compared to the inked prints.
For an expert to identify a latent print with an inked print, matching formations must be found
on both prints. The ridge lines between the matched formation are then counted. This ridge count
must be the same count for both the latent and the ink print. There is no fixed documented limit on
how many matching points must be made. The identifying marks on the Ink print and the latent
print are then marked and numbered. A conclusion and identification is then made based on the
location of the characters on the prints, their formation, and the ridge count between them.
- Recently I received a photocopy of an inked print along with a photocopy of a latent
print from [Texas researcher]. After careful and extended examination of the inked print
photocopy and the latent print photocopy given to me, I have their identifying characteristics
marked and numbered. The inked print is Exhibit DAN #3, and the latent Print is Exhibit DAN #4.
- In addition to exhibit DAN#3 and exhibit DAN#4, [researcher] gave me a photocopy of
a standard form fingerprint card. This is exhibit DAN#5. Exhibit DAN#5 is from an unknown
source and has fingerprints of an unknown person to me. The space#10 on exhibit DAN#5 is the
same inked print as DAN#3. Space #10 on exhibit DAN#5 is the space used for the left little
finger. There are other indications that the print in space #10 on Exhibit DAN#5 is the left little
finger.
- Based on my comparison, I conclude that the unknown person to me who produced the
inked fingerprint Exhibit DAN#3 produced the latent print Exhibit DAN#4, and produced the print
in space #10 on exhibit DAN #5.
/s/ A. Nathan Darby
Subscribed and sworn to before me this 12 day of March, 1998.
/s/ [not easily read]
Notary Public for Texas

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