During his residence in Louisville, Alexander Wilson, his great rival in American ornithology, called upon him. This is Audubon's account of the meeting: "One fair morning I was surprised by the sudden entrance into our counting room at Louisville of Mr. Alexander Wilson, the celebrated author of the American Ornithology, of whose existence I had never until that moment been apprised. This happened in March, 1810. How well do I remember him as he then walked up to me. His long, rather hooked nose, the keenness of his eyes, and his prominent cheek bones, stamped his countenance with a peculiar character. His dress, too, was of a kind not usually seen in that part of the country; a short coat, trousers and a waistcoat of grey cloth. His stature was not above the middle size. He had two volumes under his arm, and as he approached the table at which I was working, I thought I discovered something like astonishment in his countenance. He, however, immediately proceeded to disclose the object of his visit, which was to procure subscriptions for his work. He opened his books, explained the nature of his occupations, and requested my patronage. I felt surprised and gratified at the sight of his volumes, turned over a few of the plates, and had already taken my pen to write my name in his favour, when my partner rather abruptly said to me in French: 'My dear Audubon, what induces you to subscribe to this work! Your drawings are certainly far better; and again, you must know as much of the habits of American birds as this gentleman.' Whether Mr. Wilson understood French or not, or if the suddenness with which I paused disappointed him, I cannot tell; but I clearly perceived he was not pleased. Vanity, and the encomiums of my friend, prevented me from subscribing. Mr. Wilson asked me if I had many drawings of birds, I rose, took down a large portfolio, laid it on the table, and showed him as I would show you, kind reader, or any other person fond of such subjects, the whole of the contents, with the same patience, with which he had showed me his own engravings. His surprise appeared great, as he told me he had never had the most distant idea that any other individual than himself had been engaged in forming such a collection. He asked me if it was my intention to publish, and when I answered in the negative, his surprise seemed to increase. And, truly, such was not my intention; for, until long after, when I met the Prince of Musignano in Philadelphia, I had not the least idea of presenting the fruits of my labours to the world. Mr. Wilson now examined my drawings with care, asked if I should have any objection to lending him a few during his stay, to which I replied that I had none. He then bade me good morning, not, however, until I had made an arrangement to explore the woods in the vicinity along with him, and had promised to procure for him some birds, of which I had drawings in my collection, but which he had never seen.