Volume IV of Hinshaw's Encyclopedia, a two-volume set, constitute the largest state component of the Hinshaw Quaker encyclopedia. Quakers arrived in the Old Northwest by the thousands, establishing hundreds of Meetings for Worship and erecting an unprecedented number of monthly meetings. Volume IV contains the genealogical records (mostly births, marriages and deaths) found in all original books of some thirty monthly meetings now under the jurisdiction of the two presently established (1946) Ohio Yearly Meetings; namely the Wilbur and Gurney Branches of the Society of Friends. Twenty-five of the monthly meetings are in Ohio, four are in Pennsylvania, and one is in Michigan.