Rōma e no tōi tabi
Subtitle: Keichō shisetsu Hasekura Tsunenaga no sokuseki
By: Takahashi Yukihiko
Publisher: Kōdansha
Published: 1981
Place of publication: Tōkyō
Language: jpn
Number of pages: 351
Subjects: Biography; Officials and employees
Notes: Includes bibliographical references.

Some documents in Spanish with Japanese translation.