And Leopold II., ihr Briefwechsel (1866); Maria Theresa and Joseph II., ihre Korrespondenz samt Briefen Josephs an seinen Bruder Leopold (3 vols., 1867); Beaumarchais and Sonnenfels (1868); Joseph II.
This last pamphlet brought him into a controversy with Caron de Beaumarchais, who certainly did not get the best of it, but it lost him any chance of literary employment from the government.
On arriving in Paris, Deane at once opened negotiations with Vergennes and Beaumarchais, securing through the latter the shipment of many vessel loads of arms and munitions of war to America.
His carelessness in keeping account of his receipts and expenditures, and the differences between himself and Arthur Lee regarding the contracts with Beaumarchais, eventually led, in November 1777, to his recall to face charges, of which Lee's complaints formed the basis.
The suggestion which has been made that the success of Beaumarchais piqued him has nothing impossible in it.