Countries and regions in bold.
Here are the journals:

Journal 1, April 17-20, Singapore

Journal 2, April 20-21, Singapore

Journal 3, April 22-27, Singapore,
West Sumatra, Padang, Bukittinggi

Journal 4, April 27 - May 6
West Sumatra, Bukittinggi, Pasir Putih, Kuta, Bali

Journal 5, May 7-15
Bali, Ubud, Irian Jaya, Sentani

Journal 6, May 15-16
Irian Jaya, Wamena, Kurima

Journal 7, May 17-27
Sulawesi, Ujung Pandang, Manado

Journal 8, May 28 - June 1
Borneo, Balikpapan, Malaysia, Sabah, Sandakan

Search for Bob and Mary Lou Maag, June 6 - 10
Written by Uncle Tan, Sabah, Malaysia

Uncle Tan's official letter of explanation, June 10

Journal 9, June 6 - 10
Two Nights in the Jungle.

Journal 10, June 9 - 15
Malaysia, Kota Kinabale, Sandikan, Danai

Journal 11, June 16 - 20 Malaysia, Kota Kinale, Kuala Lumpur

Journal 12, June 20 - July 8 Malaysia, Kuala Lumpur, Langkani

Journal 13, July 8 - 20 Myanmar, Mandalay, Mingun, Kalaw

Journal 14, July 21 - 28
Thailand, Chang Mai, Bangkok

Journal 15, July 30 - August 3
Thailand, Bangkok, Laos, Vientiane

Journal 16, August 3 - 8
Vietnam, Hue', Perfume River

Journal 17, August 9 - 16
Vietnam, Danang, Hoi An, My Khe