THE LIBRARY UNITED STATES MILITARY ACADEMY WEST POINT, NEW YORK
January 31, 1905.
To Mr. Theodore Cooper,
7 West 43d Street, New York City. 
Dear Mr. Cooper:
Professor Fiebeger refers me to Wheeler's Civil Engineering (Wiley amd Sons, 1901), page 358, for a correct drawing of Long's truss. 
The diagonal members abut at the lowest and highest parts of the vertical ones, 
and the whole thing is ship-shape and scientific, and perhaps the very first truss that was so.
Professor Fiebeger says that this drawing is authentic, but I cannot refer you now to the original from which it was taken. If it is important, I can have it looked up for you.
With kind regards, believe me, dear Mr. Cooper, 
Very sincerely yours,
Edward S. Holden
Librarian.