Frontier Life This link opens in a new windowProvides access to primary source documents focusing on .the nature and significance of European settlements, interactions, and transformations Africa, Australasia, and North America in the eighteenth and nineteenth centuries. Document types include correspondence, diaries, government papers, business records, land transactions, legal documents, speeches, books and pamphlets. The earliest documents are from the seventeenth century and the latest the mid-point of the twentieth century. Adam Matthew Digital.