this is an ongoing issue as old as cities in mans history. the real land ownership changes are almost silently done by taxation on the outskirts of cities . raise taxes and or area zoning ,which increases taxes, and all the ranches and small farms disappear as they become to expensive to operate as such. other folks buy them up to to turn into businesses and residential properties. i saw some of those pictures as a young man without the glasses i now view such things today.