“The letters and documents contained in this Booklet are strictly private and confidential, and are not for publication” (Note, to rear of title-page). The Northern Exploration Company was founded in 1910 by Ernest Mansfield, a New Zealand-born prospector who was in British Columbia before staking claims to large areas of land in West Spitsbergen. The present book reproduces reports and official correspondence between Mansfield, NEC employees, the British Government, and other mining concerns. References are made throughout to an island, “N”, and to “Marble Island”, both sources of mineral, coal and other deposits. A sole reference to Advent Bay in one report suggest that the region referred to is on or near the coast of Spitsbergen, and many of the images, which show the unloading of supplies, new buildings, and the like, confirm this. The book is rare, and we can trace only 5 copies on Worldcat. The Northern Exploration Company continued in business until the 1920s, in later years attracting such Polar explorers as William S. Bruce, Ernest H. Shackleton, Frank Wild, and Herbert Ponting.