L. M. HAUPT, A.M., C.E.,
Professor of Civil Engineering.
JNO. S. ELLIOTT, B.S., C.E.,
Instructor in Civil Engineering.
Course of Civil Engineering,
UNIVERSITY OF PENNSYLVANIA.
Phildelphia, Nov. 19, 1888

Theodore Cooper, CE
Dear Sir:
In reply to your favor of 17 it gives me pleasure to say that the notice
and abstract of my paper are found in Proc. Engrs Club of Phila Vol III 
#3, p 188. and the paper itself is now and article contributed to the 
Encyclopedia Americana pub by Hubbard Bros. Phila - I believe it is 
copyrighted but I would have no objections personally to you making
any extracts - It is historical and I think representative and covers
some 40-50 pp - fully illustrated - I may have tracings on hand yet if
required and as they are taken from well known prints - they would,
I think be public property.  The Chevallier work you ought to 
examine for the beauty and the clearness of the plates.
Very truly yours,
L.M. Haupt