Letters from John Vaughan to William Tudor,

Three letters regarding James Otis correspondence in the John Dickinson papers, and an American Philosophical Society publication Vaughan was sending to the Boston Athenaeum library.

Letter from John Collins Warren to William Tudor,

One letter inviting Tudor to his wedding to Susan Powell Mason, daughter of their mutual friend, Jonathan Mason.

Letter from John Belknap to William Tudor,

One letter in which Belknap declines Tudor’s offer to partner in business speculation.

Letter from John Carter to William Tudor,

One letter regarding a bill for various sundries from Thomas Vantandeloe.

Letter from John H. Rogers & Co. to William Tudor,

One letter regarding a remittance to Thomas Dickason.

Letter from John Miller to William Tudor,

One letter regaring a shipment of books to Tudor in Brazil; includes an affadavit signed by the ship’s captain.

Letter from John R. Murray to William Tudor,

One letter regarding a sale of paintings by Tudor in Boston.

Note of monies received of Mr. J. Codman, John Codman Esq. in account current with William Tudor, Jr.,

Accounts of payment received by John Codman and other firms, as well as expenses incurred by Tudor while he was traveling in Europe as Codman’s agent.

Letters from John Orde Creighton to William Tudor,

Five letters on topics including General Juan Lavalle and warring factions in Buenos Aires and news of mutual friends and associates.

Letters from John Orde Creighton to William Tudor,

Six letters on topics such as the Brazilian export duty, the movements of other naval officers, and interactions with various dignitaries

Letters from John Murray Forbes to William Tudor,

Seven letters in which Forbes updates Tudor on relations between the provinces and provides introductions to various Argentinian diplomats sent to Brazil. He also includes a copy of a letter in Spanish sent to him from the Argentinian minister of war and foreign relations regarding peace negotiations with Brazil along with letters to the United States legation and Tudor regarding American involvement in light of the Monroe Doctrine.

Letters from John Murray Forbes to William Tudor,

Five letters relaying news of the Decembrist revolution and Buenos Aires Governor Manuel Dorrego’s execution, as well as developments in other Argentinean provinces. Forbes also writes about a personal conflict with Commodore James Creighton, and requests Tudor’s assistance in intervening on behalf of American citizens.

Letters from John Murray Forbes to William Tudor,

Five letters regarding the arrival of English Admiral Robert Waller Otway, the movements of Juan Lavalle and his troops, and the "feverish state" of the population of Buenos Aires in light of the recent violence associated with the Decembrist revolution.

Letters from John Murray Forbes to William Tudor,

Six letters regarding ongoing civil wars in the Argentinean provinces, peace negotiations, and Forbes’ implementation of the Monroe Doctrine, as well as diplomatic discussions with the provisional government in Buenos Aires, which sought American intervention. Forbes also includes a copy of a letter he wrote to the provisional government regarding privateering.

Letters from John Murray Forbes to William Tudor,

Five letters regarding the peace negotiations between Argentinean factions. He also writes of news of the intentions of Spain to establish a "paternal government" in Mexico.