1To Alexander Hamilton from Vincent Gray, [28 April 1804] (Hamilton Papers)
Baron Humboldt Supreme counseller of Mines in the service of His Prussian Majesty and Member of the Royal Academy of Science at Berlin, Travelling for the purpose of Advancing the progress of Natural History, being on his return from South America and New Spain, to the Dominions of his Prussian Majesty, by way of the United States, I take leave to recommend him to your particular friendship...
2To Alexander Hamilton from Vincent Gray, 26 April 1803 (Hamilton Papers)
The Ship Aspasia being about to depart for new york, I take leave to present to you this my friend Mr. Walden a small Turtle which I beg your acceptance as a small memento of my grateful recollection of your politeness while acting at the head of the Treasury Department. I have resided here some time as agent of the United States, and shall in consequence of having many debts to collect for...