Correspondence to Hirota　Ritaro Regarding Sending of Guest Room Wallpaper Sample and Urging a Decision (Object from Hirota Ritaro Residence, Book 2) デ・ラランデ書簡（客間壁紙見本の送付及び決定につき）

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

Georg de Lalande

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

Georg de Lalande

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)

Georg de Lalande

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

Georg de Lalande

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

Georg de Lalande

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

Georg de Lalande

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

Georg de Lalande

Correspondence to Hirota Ritaro Communicating Progress on the Construction by Yabe Kunitaro (Object from Hirota Ritaro Residence, Book 1)

Georg de Lalande