In this paper, Helm estimates the food and calorie intake of 18th-century Chipewyans based on the detailed journal kept by the trader Peter Fidler. Fidler traveled with a party of Chipewyans between Great Slave Lake and Lake Athabasca, from September 4, 1791 to April 10, 1792. He recorded in his journal the daily number of animals killed and consumed. Helm is left to estimate the size, consumable tissue, leanness, and calories of the animals. She also has to estimate the size of the traveling party, which changes as they meet and travel with other groups. She concludes that the average daily intake for members of the traveling party was 6.15-6.89 lbs., or 5140-5780 kcal per person.