The proved Tree Surgery 
Davey Tree Surgery is proved Tree Surgery; it saves trees without 
guessing or experiment. 
Proved by time—by a record of successful performances spanning a 
generation. 
Proved by men of science, such as Dr. H. D. House, New York State 
Botanist and former professor in Biltmore Forestry School, who writes 
after investigation that Davey Tree Surgery "measures up to the highest 
degree of efficiency which training and experience can produce.” 
Proved by the U. S. Government, which after official investigation, en¬ 
dorsed Davey Tree Surgery as the only Tree Surgery good enough for the 
trees on the Capitol grounds and elsewhere. 
Proved by the success of the Davey concern as an institution, which is 
today doing a volume of business thirty times greater than the volume 
of a decade ago. 
Proved —and proved best—by Davey clients. Hundreds of estate owners 
between Kansas City and Boston—prominent men and women whose recom¬ 
mendation you can accept with complete confidence—enthusiastically en¬ 
dorse Davey Tree Surgery. 
Write today for FREE examination of your trees 
—and booklet “When Your Trees Need the Tree Surgeon." What is the 
real condition of your trees? Are insidious diseases and hidden decay 
slowly undermining their strength? Will the next severe storm claim 
one or more as its victims? Only the experienced Tree Surgeon can tell 
you fully and definitely. Without cost or obligation to you, a Davey Tree 
Surgeon will visit your place, and render an honest verdict regarding their 
condition and needs. Write today. 
Improper trimpMl* 
ruined this trefe : 
. • .• *; ^ 
Trimming, correctly done, is good for trees, g&cxj* fof Jheir 1 
appearance and good for their health—in fact, necessary*fof” 
most trees. * ° 
But —incorrectly done, it is positively dangerous, yes ruinous. 
Thousands of trees are lost every year because their owners 
did not realize the degree of expert knowledge necessary in 
successful tree trimming. 
The fine old tree in the picture above was “trimmed" by somebody who 
had little or no conception of the scientific requirements of the work. 
Fungus spores entered the unprotected wounds left on the tree and decay 
set in, rapidly disintegrating the internal cell structure of several of the 
largest branches until nothing but weak shells remained. 
Then the inevitable happened!—a severe storm blew up, the weakened 
branches gave way, and the tree was ruined. 
No matter what the condition of your trees may be—whether they need 
merely a little scientific trimming or whether they require thorough treat¬ 
ment for decay and disease—it is dangerous to entrust them to anything less 
than tree surgery of proved worth. Remember, also, that little troubles 
with trees soon grow into big ones. 
FOUR TYPICAL LETTERS FROM HUNDREDS WRITTEN BY SATISFIED 
DAVEY CLIENTS 
From J. B. Pierce, 
American Radiator Co., Boston, Mass . 
“I wish to express my entire satisfaction with the work performed by 
your man. From A. G. Reeves, 
The Reeves Bros. Co., Alliance, Ohio . 
“7 am very much pleased with the expert manner in which your men 
have handled the trees on my farm. Should they require any further atten¬ 
tion, you can rest assured you will be called upon.” 
From Henry Abels 
Secretary Franklin Life Insurance Co., Springfield, Illinois 
“The work done by your representatives on the trees surrounding our 
home office building is very satisfactory. We think it not only improves 
the appearance, but will greatly prolong the life of the trees. I consider 
your method of treatment very beneficial and distinctly worth while.” 
From Mr. R. Alger. 
Vice-President Winnesheik County State Bank, Decorah, Iowa. 
“The men who handled my work were very courteous and good workers. 
It is certainly gratifying to see people who understand their business and 
are willing to work, operate on a job of this kind,” 
The Davey Tree Expert Co., Inc., 508 Elm St., Kent, Ohio 
(Operating the Davey Institute of Tree Surgery) 
Branch Offices with telephone connections: 225 Fifth Avenue, New York 
2017 Land Title Bldg., Philadelphia 450 McCormick Bldg., Chicago 
Permanent representatives located at Boston, Newport, Lenox, Hartford, Stamford, Albany, Poughkeepsie, White Plains, 
Jamaica, L. I., Newark, N. J., Philadelphia, Harrisburg, Baltimore, Washington, Buffalo, Pittsburgh, Cleveland, Detroit, 
Cincinnati, Louisville, Chicago, Milwaukee, Minneapolis, St. Louis, Kansas City. Canadian Address: 22 Victoria Sq., Montreal 
Davey Tree Surgeons 
FOR SAFE TREE SURGERY 
Every real Davey Tree Surgeon is in the employ of the Dave v Tree Expert Company, and the public is cautioned against 
those falsely representing themselves. 
KIM'JIHnillllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllillllllllllllllO 
JOHN DAVEY 
“Father of Tree Surgery” 
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