House of Georg de Lalande

Correspondence to Hirota Ritaro from de Lalande Requesting Payment of Balance (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro from de Lalande Regarding Return of Loaned Money (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro from de Lalande Requesting Payment to Yabe Architect Office (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro from de Lalande with Details on Imported Curtains, Carpets, and Cloth Samples (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro Communicating Assurance of Completion of the Hirota Residence and Enclosure of a Receipt (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro Confirming Order of a Relief (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota Ritaro Urging a Decision on the Design of the Tapestry (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota　Ritaro Regarding Bill for Rebuilding of Former Residence (Object from Hirota Ritaro Residence, Book 2)

Potrait of Francesco de' Medici

House of Koide

House of Uemura

Correspondence to Hirota　Ritaro Regarding Sending of Wallpaper Sample (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro Explaining the Details of Construction Charges (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota　Ritaro Regarding Bill for Rebuilding of Former Residence (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro Confirming Order Placement for a Relief (Object from Hirota Ritaro Residence, Book 1)

House of Pleasure

Diego Felipe de Guzmán, Marquis of Leganés

House of Korekiyo Takahashi

House of Kunio Mayekawa

Correspondence to Hirota　Ritaro Regarding Enclosure of the Receipt for a Purchase of a Picture and a Request to Offer Work (Object from Hirota Ritaro Residence, Book 2)

Correspondence to Hirota Ritaro Discussing Additional Construction Work (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota Ritaro Accompanying a Bill for Stained Glass (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota Ritaro Accompanying Samples Curtains and Carpets (Object from Hirota Ritaro Residence, Book 1)

Correspondence to Hirota　Ritaro Pleading Payment of the Building Cost and Design Fees (Object from Hirota Ritaro Residence, Book 2)