George Letterman 
Missouri, Arkansas, and r. 
Northeastern Texas yall J wat =i 
—_ 
4 coe ha ad 
aaa 
“He finally in 1869 settled in 
Allenton, Missouri, a railroad 
hamlet about thirty miles west of 
St. Louis ... The distribution of 
the trees of this region before Mr. 
Letterman’s travels was little 
known, and much useful 
information concerning them 
was first gathered by him.” 
Northern New York 
and Eastern 
Massachusetts 
Henry Ravenel 
South Carolina and Georgia 
“No other American 
botanist, perhaps, has 
minutely studied so many 
forms of the vegetable 
kingdom as Ravenel, and 
none has been more 
respected or beloved.” 
M AP 
SHOWING THE POSITION OF "THE 
FOREST PRAIRIE & TREELESS REGIONS 
NORTH AMERICA 
Allen Curtiss EXCLUSIVE OF MEXICO 
Florida 
and Interior Southeast 
pared under the cdirectron of 
CS:SARGENT. SPECIALAGENT 
Charles Mohr 
Gulf Coast a 1 Yq “He has found many 
“He made his home at Mobile, 
fr oof 
been a successful manufacturing 
druggist, and has devoted his spare 
time to the study of the flora and the 
natural resources of the state.” 
— Alabama. Here for many years he has ae 
plants, including a 
number of tropical 
trees, not known in 
the territory of the 
United States before 
his time.” 
7 
= pons 
S 
