Mostly correspondence to J.O. Carter, usually regarding overthrow of 1893 and business affairs of Queen Liliuokalani. Letters also relate to Bishop Estate, Bishop Museum, and Campbell Estate. Also present is a small collection of signatures of significant individuals in Hawaiian history from 1851-1885.

Loyal to the Land is a sweeping history of one of the United States' largest working ranches, the Big Island of Hawaii's Parker Ranch. Dr. Bergin chronicles the ranch from its establishment on two acres purchased for ten dollars by John Palmer Parker to the years following World War II and the beginning of a new era of family ranch management under Parker’s grandson, Richard Smart. In this wide-ranging and insightful book, illustrated with more than 250 historical photos, Dr. Bergin first discusses the important Hispanic vaquero roots of ranching in Hawaii. He then relates the histories of the five foundation families, providing rich and detailed information on key members who contributed to the Ranch's success. The balance of the book examines every aspect of Parker Ranch development: management, labor, improvements and diversification of livestock, veterinary and animal care programs, and the Ranch’s role and influence on the Big Island and the state.