CONGRESSIONAL INVESTIGATION PEARL HARBOR ATTACK

Hewitt Investigation

INDEX OF EXHIBITS

Exhibit No.

Description

Page1 of original exhibit where introduced

Page

1

Precept convening investigation

1

359

1A

Modification of precept, directing report of findings and conclusions-

602

360

2

Narrative statement by counsel of previous Navy investigations

2

361

3

CinCPOA Weekly Confidential Intelligence Bulletin of 8 Dec. 1944, relating to the attacking force

5

588

4

A translation of a captured Japanese submarine chart, showing courses and location of U. S. ships in Pearl Harbor

8

614

5

CinCPOA Confidential Intelligence Bulletin of 20 Oct. 1944, containing description of Japanese midget submarines

9

515

6

ONI document "ONI 220-J, Japanese Submarines"

9

648

7

Berthing plan at Pearl Harbor, 7 Dec. 1941 (Ex. 60 of Naval Court)

9

648

8

Photostatic copies of Com14 and Com16 dispatch estimates of Japanese fleet location and movements, 26 Nov. 1941

12

648

9

ONI Bulletin of 1 Dec. 1941, Japanese fleet locations.

17

650

10

McCollum memorandum estimating situation as of 1 Dec. 1941

21

659

11

"Battle Report"

22

661

12

FCC radio intercepts regarding "winds" code (Ex. 65 of Naval Court)

31

661

13

Collection of intercepted Japanese dispatches

56

662

14

14A 14B, 14C, 14D: Photostatic copies of captured Japanese submarine chart, showing courses and location of U. S. ships in Pearl Harbor

60

676

15

Collection of intercepted Japanese dispatches (Ex. 63 of Naval Court)

66

676

16

Copies of dispatches sent from RI unit, Corregidor, regarding Japanese fleet movements

75

702

17

Photostat of captured Japanese submarine chart used for Plate V of "Battle Report"

83

703

18

Log of conversation between WARD and CONDOR on the morning of 7 Dec. 1941

91

703

19

Tentative copies of Communication Intelligence Summaries, for 1 Nov. 1941 to 6 Dec. 1941, at Pearl Harbor

103

705

20

Message from Tokyo establishing the hidden word code.

135

729

21

Pacific Fleet Intelligence Bulletin of 27 Nov. 1941 concerning composition of Japanese Navy

185

730

22

Daily Communication Intelligence Summaries, 14 Oct. 1941 to 5 Dec. 1941, prepared by Fleet Intelligence Officer (Captain Layton) for delivery to Admiral Kimmel

194

739

23

Memorandum of 1 Dec. 1941 from Fleet Intelligence Officer to Admiral Kimmel, estimating Japanese ship locations

211

779

24

Nov. 24th dispatch from CNO to CincPac (Ex. 15 of Naval Court)

238

781

25

"War Warning" (Ex. 17 of Naval Court)

247

782

26

Layton Intelligence Reports from 6 Oct. 1941 to 2 Dec. 1941

259

783

27

Paraphrased copies of dispatches from various intelligence agencies delivered to CincPac

264

789

28

Memorandum from Fleet Intelligence Officer to Admiral Kimmel regarding proposed Army aerial reconnaissance of Mandated Islands

266

801

29

Intercepted Japanese consular dispatches delivered to Fleet Intelligence Officer about December 10th

272

802

30

Two Japanese panorama views of Pearl Harbor with Japanese log on reverse side, recovered from submarine (returned to Captain Layton)

279

804

30A

Photostat of Japanese log on reverse of exhibit 30

279

804

30B

Translations of exhibits 30 and 30A

280

804

31

Panorama sketch of Pearl Harbor position five miles south of Pearl Harbor, recovered from submarine (returned to Captain Layton)

280

805

31A

Photostats of exhibit 31

280

805

32

Original Japanese chart of Pearl Harbor recovered from Japanese midget submarine (returned to Captain Layton)

281

805

32A

Photostat of exhibit 32

281

805

33

Original Japanese chart of Pearl Harbor recovered from Japanese submarine, showing defensive installations (returned to Captain Layton)

290

805

33A

Photostatic copy of exhibit 33

291

805

34

Staff Instructions, CincPac, 1941

293

806

35

U. S. Pacific Fleet Operating Plan, Rainbow Five (Navy Plan O-1, Rainbow Five) (WPPac-46)

295

837

36

Letter of 9 September 1941 from CNO to CincPac, approving Pacific Fleet Operating Plan Rainbow Five

297

869

36A

Letter of 25 July 1941 from CincPac to CNO, submitting Pacific Fleet Operating Plan Rainbow Five.

297

871

37

Photostatic copy of schedules setting forth utilization of patrol planes of Pacific Fleet from 17 Nov. to 31 Dec. and approved 22 Nov. 1941

368

872

38

Transcripts of intercepted telephone calls of Japanese Consul and Vice Consul in Honolulu from October to 2 Dec. 1941 (Consul's marked 38A; Vice Consul's marked 38B)

379

872

39

Copy of intercepted "Mori conversation"

382

908

40

ONI Summaries of messages sent by Japanese Consul in Honolulu from 1 Dec. to 6 Dec. 1941

385

911

41

File of work sheets on Jap diplomatic traffic (incorporated in other exhibit)

420

933

42

Paper showing part of decryption process of Japanese "PA" code

421

935

43

Duty Officer, Navy Yard, Pearl Harbor, information sheets

430

935

44

Extract from signal log of gate vessel of 7 Dec. 1941

430

937

45

Extract from quartermaster's log of gate vessel of 7 Dec. 1941

431

938

46

Extract from log of Signal Tower, Navy Yard, Pearl Harbor, of 7 Dec. 1941

432

938

47

Collection of documents, containing Annex VII, Section VI, Joint Agreements, to Joint Coastal Frontier Defense Plan

457

938

48

Collection of dispatches regarding submarine contacts at Pearl Harbor in November and Dec. 1941

461

942

49

Bellinger "Estimate of Situation"

474

946

50

Letter from ComTaskFor 9 to CinC, 20 Dec. 1941, on reconnaissance prior to attack

481

953

50A

Dispatches cited in exhibit 50

482

955

51

ComTaskFor 9 letter of 22 Oct. 1941, file 0026

483

959

52

ComTaskFor 9 letter of 16 Jan. 1941

484

961

53

ComPatWing 2 letter to CNO, of 11 Dec. 1940

488

965

54

Watch and duty schedules of Patrol Wings One and Two prior to attack

496

973

55

RCA Communications, Inc., statement, listing certain Japanese cable messages from Honolulu in Nov. and Dec. 1941

542

932

56

Coded messages from Japanese Consul General at Honolulu, via RCA, among those listed in exhibit 55, received by Navy 5 Dec. 1941

544

982

56A

Pages 7 to 12 of exhibit 56, containing messages not decrypted until after the attack.

600

986

57

Coded messages from Japanese Consul General at Honolulu, via RCA, among those listed in exhibit 55, received by Navy after the attack

550

996

57A

Coded messages from Japanese Consul General at Honolulu, via RCA, received by Navy on night of 7 Dec. and subsequently translated

601

1004

57B

Messages received and decoded subsequent to Dec. 7, 1941.

58

Collection of dispatches from Naval Communication files relating to Japanese fleet movements and locations during the period 27 Nov. to 7 Dec. 1941

555

1058

59

Collection of Japanese plain language news broadcasts

555

1068

60

Collection of memoranda relating to messages received at Naval Communications in various Japanese code systems

556

1081

61

Memorandum of Naval Communications, surveying work sheets processed by Navy of Japanese purple system

557

1084

62

Report from DIO, 14th N. D., to Director of Naval Intelligence, of 19 Apr. 1942, relating to coded dispatch traffic of Japanese Consul General, Honolulu.

569

1088

63

Certified collection of documents relating to anti-torpedo baffles for protection against torpedo plane attacks.

602

1126

64

Copy of ltr. from Secretary of War to Secretary of Navy, dated 7 Feb 1941, relating to air defenses at Pearl Harbor

603

1129

65

CincPac secret letter of 7 Aug. 1941 relating to the organization of the Orange fleet

603

1130

66

Map showing the location of ships present at Pearl Harbor on 7 Dec. 1941

603

1144

67

Telephone log of radio unit at Pearl Harbor, showing calls made and received on 7 Dec. 1941 as to Jap fleet locations

603

1145

68

Photostatic copies of memoranda relating to questioning of captain of Japanese captured submarine.

604

1147

69

Pacific Fleet Weekly Intelligence Bulletin for 11 June 1945, containing description of midget submarines and method of transport to Pearl Harbor

604

1151

70

Selected collection of Pearl Harbor dispatches, miscellaneous subjects, taken from CincPac Headquarters

604

1176

71

Collection of dispatches relating to proposed Army reconnaissance in November of 1941

604

1205

72

Collection of dispatches of Dec. 7 and 8, 1941, from CincPac

605

1206

73

CincPac secret letter of 12 Dec. 1941 reporting damage to ships at Pearl Harbor as result of attack and other details

605

1213

74

Photostatic copy of War Diary of Com 14 from 7 Dec. 1941 to 1 Jan. 1942

605

1266

75

War Diary of USS WARD; War Diary of O-in-C, Net and Boom Defenses, 14th N. D.; War Diary of USS CONDOR; excerpts from diary of O-in-C, Net and Boom Defenses, 14th N. D., WARD, and CONDOR

605

1281

76

Photostatic copy of 1st and 2nd endorsements on Com 14 letter of 30 Dec. 1941 relating to early morning submarine contact on 7 Dec. 1941

606

1298

77

Collection of correspondence relating to combined operating center for Army and Navy

606

1299

78

Typewritten translation and copy of intercepted Japanese communication contained in exhibit 20, and notes relating thereto

611

1305

79

Photostatic copy of page 44 of volume containing translations of files of operations orders, orders, memos, and serials dealing with Japanese Navy plans, recovered from Jap CA NACHI

613

1306

80

Joint Coastal Frontier Defense Plan, Hawaiian Theatre

613

1306

81

Collection of photostatic copies of ONI memoranda dealing with organization and locations of Jap fleet as estimated during November and up to Dec. 1, 1941

613

1314

 

 

 

1Pages referred to are indicated by italic figures enclosed by brackets and represent pages of original exhibit.