Details of the farming in Yuan sub-district, including rice plantation area, damaged area, harvested area and yield.

List of rice varieties, including types (rice, glutinous rice), harvest time, yield, size of rice, tilling and soil type, height, water quantity for planting, disease resistance, quality of grain, cooking quality, and characteristics of each variety.

September 1, 1960 A letter from Moerman to Commander Duan Bunnag. Moerman provided an introduction and requested information about the environment of Chiang Kham before the arrival of Moerman.

January 25, 1961 A letter from Moerman to Duan Bunnag to request information about the meteorology of Chiang Kham.

August 24, 1960 A letter from Moerman to Governor of Chiang Rai, requesting assistance with statistical data from the Chiang Kham district, for use in his research. The authorities both in the past and present had already gathered the existing data.

January 16, 1962 A letter from Moerman to Dr. Sala Dasananda, requesting information about price of rice in Phayao District for his research, both the highest and lowest prices for the years 2500 to 2504 B.E, and compared with the prices in Chiang Kham district and Bangkok.

Population breakdown by age group.

Population of 116 households disaggregated by gender and age. There are four age brackets : middle age group (age 49 +), parents group; youth group; children group.

Details of the change in population of the village between March and June.