1James Madison to Ferdinand R. Hassler, 25 September 1828 (Madison Papers)
Your letter of the 8th. with two copies of your "Elements of Geometry" came to hand when a spell of sickness prevented me from making the proper acknowledgements. I now beg of you to accept them, particularly for the copy allotted to myself. That for the University has been duly forwarded and will there find a better capacity than I possess to do justice to the work. I can only repeat to you...