- ColecciónArchives/RG-AL - RG-AL: Alumni Office Records
- Serie3 - Class materials
- Subserie3.2 - Class Letters
- 25 más...
- 25 - Class Letters
- 26 - Class Letters
- 27 - Class of 1920-1927. Class Letters
- 28 - Class of 1928-1935; 1984. Class Letters
- 29 - Class of 1943-1949 (written 2011-)
- 30 - Class of 1950-1957 (written 2011-)
- 31 - Class of 1958-1964 (written 2011-)
- 32 - Class of 1965-1973 (written 2011-)
- 33 - Class of 1974-1987 (written 2011-)
- 1 más...