Endpapers 
6-W, 6-E 
7-W, 7-E 
8-W, 8-E 
9-W, 9-E 
Map No. 
1 North 
2 Alaska 
LISTS OF MAPS 
General and Base Maps, Volumes 1-6 
Volume 1. Conifers and Important Hardwoods 
Base Maps 
United States. Base map with names of counties, 
Provinces of Canada, and States of the northern 
part of Mexico. 
North America. Base map with names of States of 
the United States, Provinces and other subdivi- 
sions of Canada, States of Mexico, and names of 
additional countries. 
United States (contiguous), National Forest Sys- 
tem, with names of National Forests and National 
Grasslands. 
Overlays (In Pocket) 
Rivers and Natural Lakes. 
Physical Subdivisions, or Land-Surface Form. 
Topographic Relief. Contour lines at selected ele- 
vations. 
Plant Hardiness Zones. Approximate range of aver- 
age annual minimum temperatures for each zone 
(in degrees Fahrenheit). 
Length of Growing Season. Mean length of freeze- 
free period (days) between last 32° F. tempera- 
ture in spring and first 32° F. temperature in 
autumn. 
Precipitation or Rainfall. Normal annual total pre- 
cipitation (inches). 
Climates of the United States. Normal distribution 
of the principal climates in the United States. 
Precipitation effectiveness (P-E) index. 
Maximum Extent of Glaciation in the Wisconsin 
Glacial Stage (Pleistocene Epoch). 
Major Forest Types. 
Volume 2. Alaska Trees and Common Shrubs 
General Maps 
America 
with place names 
3 National Forests, Parks, and Wildlife Refuges 
4 
5 
Topography (contour map) 
Relief map 
Physiography (physiographic provinces of Alaska) 
Geology (generalized) 
Extent of glaciation in Alaska 
Permafrost 
Soils with agricultural potential 
Climatic zones 
Hydrology 
Precipitation 
Mean annual snowfall 
Mean annual temperature (°F.) 
Mean July maximum temperature (°F.) 
Mean January minimum temperature (°F,) 
Thawing index 
Freezing index 
Plant hardiness zones 
Fire season climatic zones 
Vegetation of Alaska 
Forests of Alaska 
Volume 3. Minor Western Hardwoods 
Base Maps 
Map No. 
1-NW, 1-SW Western United States (contiguous). Base map with 
names of counties, Provinces of Canada, and 
States of the northern part of Mexico. 
2-N North America. Base map with names of States of 
the United States, Provinces and other subdivi- 
sions of Canada, States of Mexico, and names of 
additional countries. 
3 United States (contiguous), National Forest Sys- 
tem with names of National Forests and National 
Grasslands. 
Volume 4. Minor Eastern Hardwoods 
Base Maps 
Map No. 
1-NE Northeastern United States (contiguous). Base map 
with names of counties. 
1-SE Southeastern United States (contiguous). Base map 
with names of counties. 
