Louisville Bridge and Iron Company
Office, cor. Eleventh and Oldham Streets.
J. VV. AINSLIE, President. 
E. BENJAMIN, Vice President.
J.M JOHNSON, Engineer. 
A. P. COCHRAN, Secretary. 
F. H. VAUQHAN, Treasurer.
Lousieville, Ky. Feby .9 th 1889
Theodore Cooper, Esq .
Mew York,N.Y. 
Dear Sir:-
Replying to your letter of the 7th instant. 
I send you today under separate cover the following 
lithographs:
Monongahela River bridge on B. and O.R.R. constructed in 
1851-2 under Mr Albert Fink's patent, also three sheets 
illustrating the early Fink iron and wooden suspension 
trusses,
General plan and details of old combination triangular 
bridge, the details of which were patented by Mr Fink. 
General plan of 400 ft. span Ohio River bridge at 
Louisville , Ky.,
Fourth annual report of Chief Engineer, Louisville 
Bridge Co.,
Two blue prints of recent reconstruction of a ten panel 
combination bridge L. and N.R.R.
But few of the original combination bridges are now in
use on the L. and N.R.R. Some have been reconstructed, but
the rule for new work is iron construction. 
I trust the above will prove of benefit to you.
Yours truly,
J.M. Johnson
Engineer.