Dayton, June 19, 1901
Owing to changes in our business arrangements we shall start on our trip much earlier than we had expected, probably not later than July 10th, if we can get the material for our machine ready by that time. If this change should conflict with any plans of your own for the use of the anemometer, which you so kindly offered to let us have, please do not inconvenience yourself to oblige us. We can, if necessary, do without it.
We are indebted to you, I suppose, for a copy of the June Cassier's. Your article is the most accurate and sensible brief statement of the flying problem that has appeared for sometime. I only regret that so few investigators seem to be actively at work trying to gain the knowledge and skill necessary to manage aeroplanes in the air. There is really no other way of solving the problem. Balloons will not do.