After the formation of Midpeninsula Regional Open Space District (Midpen) in 1972, General Manager Herb Grench proposed the creation of a land trust to work privately with landowners and to raise money that would supplement public funding for land conservation. Thus, POST was established as a partner to Midpen. POST has since grown to become one of the premier land trusts in the country and is an invaluable partner to national, state and county agencies in land stewardship and conservation.