1To George Washington from Arthur Donaldson, 1 October 1785 (Washington Papers)
I Esteem my Self highly honourd by your Excelencys faivour to Mr Hollingsworth and Shall Imbrace the Opertunity of Serving you with the greatest freedom Theirfore in the first place hope to remove your doubts of the Hippopomos being Applicable to your purpose by Viewing the Inclosd draught & discription which was publishd in the Pennsylvania Magazine for May 1775 but on Account of the War was...