Description of Green Trails Maps Forest Park Quarter Fold Green Trails, Inc founded in 1973, publishes over 140 topographic recreation map titles for the most spectacular mountain, beach desert areas North America. Including Washington and Oregon's Cascade Mountains, Washington's Olympic Peninsula, the Spring Mountains of Nevada, The parks of Phoenix and the Sky Islands of Tucson. Green Trails maps show the most current trail, road, and access information to national forests, national parks, state and local parks, and other public lands in the most clear, compact, and convenient format and scale available. Features: Original Issue 2005 Current Issue 2007 Edition 2 Scale 1:18000 Inset Scale 1:9000 Projection UTM UTM Zone 10 Datum NAD27 Sheet Size 18x24 Fold 6x8 1:18000 detail map of the largest forested City Park in the USA Includes Macleay Park, Council Crest, Marquam Nature Park and a 1:9000 Inset of Washington Park/Hoyt Arboretum