Series 4: Manuel Rionda y Polledo confidential letterbooks, 1908-1942

Series 4 consists of copies of selected outgoing correspondence and internal memoranda from Manuel Rionda. Most of the letters are marked CONFIDENTIAL and concern business matters primarily. A numerical code is used in many of the letters for the names of people and businesses and for important business data. Unfortunately, the code sheet is rarely included with the letter.

The letters here are not repeated in other letterbook series. Volumes 1-3 have name indexes; volume 4 does not.