Agency numbers in the ARC (revised)

# prefix agency abbrev rec group comments
1 104 Central Intelligence Agency CIA 263
2 111 Defense Intelligence Agency DIA 373
3 117 Department of Justice - Office of Information
and Privacy		 DOJ 60 (See ARRB Final Report, pp. 99, 151)
4 119 Department of State DOS 59
5 121 Bureau of Alcohol, Tobacco, and Firearms ATF 436 (Possibly should be switched with 201 Treasury)
6 124 Federal Bureau of Investigation FBI 65
7 131 House Subcommittee on Gov't Information
and Individual Rights		 HSCGIIR 233 Abzug Committee
8 135 House Select Committee on Intelligence HPSCI 233 Pike Committee Records
(Now House Permanent Subcommittee on Intelligence)
9 136 Immigration and Naturalization Service INS 85
10 137 Internal Revenue Service IRS 58
11 139 Library of Congress LOC 297
12 144 National Security Agency NSA 457
13 145 National Security Council NSC 273
14 154 US Secret Service USSS 87
15 155 Securities and Exchange Commission SEC 266
16 157 Senate Select Committee on Intelligence Activities SSCIA 46 Church Committee records
(Now Senate Select Committee on Intelligence)
17 159 Social Security Administration SSA 47 *
18 161 US Air Force USAF 342
19 165 US Information Agency USIA 306
20 166 US Marine Corps USMC 127
21 169 US Postal Service USPS 28
22 172 White House Communications Agency WHCA 130
23 173 Office of Naval Intelligence ONI 526
24 174 Bureau of Medicine and Surgery BMS 52 Department of Navy medical services
25 176 John F. Kennedy Library NARA-JFK 0
26 177 Lyndon B. Johnson Library NARA-LBJ 0
27 178 Gerald R. Ford Library NARA-FORD 0 Rockefeller Commission records
28 179 National Archives and Records Administration (NARA) NARA-WC 64 Warren Commission documents at NARA:
179-1: HSCA review of WC records
179-2: DOJ
179-3: NARA declassification reviews, FOIA, etc.
179-4: WC internal records
29 180 House Select Committee on Assassinations HSCA 233
30 181 National Archives and Record Administration NARA 64 *
31 182 Department of Justice - Civil Division DOJCIV 60
32 186 Department of Justice - Criminal Division DOJCD 60
33 187 Department of Justice - Executive Office US Attorney EOUSA 118
34 188 Department of Justice - Civil Rights Division DOJ 60
35 189 NARA Legal Services Staff, General Counsel NARA 64
36 191 Department of Justice - Office of Legal Counsel DOJ-OLC 60 *
37 192 US Army USA 0 Department of the Army (?)
38 194 US Army Staff, ACSI G2 IRR 319 Investigative Records Repository records
39 195 Office of the Secretary of Defense OSD 0 Selected Documents from the
Donated Papers of Robert McNamara
40 196 US Customs Service USCS 36
41 197 Army Corps of Engineers, Army Staff
HQ Files Pentagon Telecommunications Center		 USA 338 Army Corps of Engineers (197-10001)
Pentagon Telecommunications Center (197-10002)
42 198 Office of the Secretary of the Army OSA 335 Joseph Califano Papers
43 201 Department of Treasury TRS 56 Office of the Secretary
(Possibly should be switched with ATF)
44 202 Joint Chiefs of Staff JCS 218
45 203 Eisenhower Presidential Library NARA-EISEN 0 *
46 204 Senate Internal Security Subcommittee SISS 46 Eastland Committee
47 205 Armed Forces Institute of Pathology AFIP 335
48 206 President's Foreign Intelligence Advisory Board PFIAB 0 *
49 207 Carter Presidential Library CARTER 0 *
50 208 Senate Permanent Subcommittee on Investigation PSI 46 McClellan Committee

Abbreviations

RG = National Archives Record Group
* = Not included on new NARA list
? = Uncertain

For further explanation, see main post.