In addition to the annual World Radio TV Handbook and Summer Supplements, World Publications (Hellerup, Denmark) produced other books and materials of interest to the radio listener. In the 1965-66 How to Listen to the World (p. 159), 1966 WRTH (p. 66) and 1966 WRTH Summer Supplement (p. 43), advertisements announced the release of "BIT-Broadcasting Identification Tape," a one hour reel-to-reel recording featuring the interval signals and identifications of over 60 shortwave stations. The stations were grouped on the tape alphabetically, by continent, with a brief introduction before each clip. Here are two separate mp3 files (Side 1 and Side 2 of the tape). Thanks to the World Radio TV Handbook for permission to post this.

Side 1

1. Albania - Radio Tirana (00:00)
2. Austria - Osterreichischer Rundfunk (00:50)
3. Belgium - Radiodiffusion-Television Belge (01:32)
4. Bulgaria - Radio Sofia (02:20)
5. Czechoslovakia - Radio Prague (03:21)
6. Denmark - Radio Denmark (03:59)
7. Finland - Finnish Broadcasting Co. (04:57)
8. France - ORTF, Office de Radio-Television Francaise (05:57)
9. Germany - Deutsche Welle (07:02)
10. Great Britain - BBC (07:50)
11. Greece - National Hellenic Broadcasting Institute (08:36)
12. Holland - Radio Nederland (09:17)
13. Hungary - Radio Budapest (10:16)
14. Iceland - Iceland State Broadcast Service (10:55)
15. Italy - RAI, Radiotelevisione Italiana (11:39)
16. Monaco - Radio Monte Carlo (12:20)
17. Monaco - Trans World Radio (12:36)
18. Norway - Radio Norway (13:10)
19. Poland - Polskie Radio (14:13)
20. Portugal - Emissora Nacional de Radiodifusao ("The Voice of the West") (14:40)
21. Rumania - Radio Bucharest (15:35)
22. Spain - Radio Nacional de Espana (16:13)
23. Sweden - Radio Sweden (17:20)
24. Switzerland - Swiss Broadcasting Corp. (18:14)
25. USSR - Radio Moscow (18:52)
26. Vatican - Vatican Radio (19:28)
27. Yugoslavia - Radio Belgrade (20:17)

28. Cameroon - Radiodiffusion du Cameroon (20:57)
29. Ethiopia - ETLF, Radio Voice of the Gospel (21:29)
30. Gabon - Radiodiffusion Television Gabonaise (22:13)
31. Guinea (Spanish) - Radio Santa Isabel (22:54)
32. Liberia - ELWA (23:40)
33. Malagasy - Radiodiffusion Nationale Malgache (24:31)
34. Mozambique - Radio Clube de Mozambique (25:24)
35. Nigeria - Voice of Nigeria (26:36)

Side 2

36. Nigeria (East) - Eastern Nigeria Broadcasting Serv. (00:00)
37. South Africa - South African Broadcasting Corp. (00:51)
38. Tanganyika - Radio Tanganyika (02:00)
39. Uganda - Radio Uganda (03:09)

40. Afghanistan - Radio Afghanistan (04:23)
41. Ceylon - Radio Ceylon (05:28)
42. China (People's Republic of) - Radio Peking (06:42)
43. India - All India Radio (07:48)
44. Indonesia - Voice of Indonesia (08:56)
45. Iran - Radio Iran (09:54)
46. Israel - Kol Israel (11:15)
47. Japan - Radio Japan (12:23)
48. Korea (Republic of) - Voice of Free Korea (13:15)
49. Lebanon - Lebanese Broadcasting Station (14:04)
50. Malaysia - Radio Malaysia (14:58)
51. Pakistan - Radio Pakistan (15:51)
52. Saudi Arabia - Saudi Arabian Broadcasting (16:38)

53. Australia - Radio Australia (17:14)
54. New Zealand - Radio New Zealand (18:08)
55. Tahiti - Radio Tahiti (18:54)

56. Canada - Radio Canada (19:24)
57. U.S. - Voice of America (20:12)
58. U.S. - KGEI (21:06)
59. U.S. - WRUL, Radio New York Worldwide (21:53)
60. United Nations - United Nations Radio (22:47)
61. Haiti - 4VEH (23:20)
62. Martinique - Radiodiffusion Française Antilles-Guyane (23:58)
63. Windward Islands - Windward Islands Broadcasting Service (24:41)

64. Ecuador - HCJB (25:19)
65. Guiana (British) - Radio Demerara (26:01)

66. Radio Liberty (27:04)
67. Taiwan - Voice of Free China (27:36)