![File:1950 Census Enumeration District Maps - Puerto Rico (PR) - Rio Piedras Municipality - Rio Piedras - ED 7-1-158 - NARA - 75639822 (page 12).jpg - Wikimedia Commons File:1950 Census Enumeration District Maps - Puerto Rico (PR) - Rio Piedras Municipality - Rio Piedras - ED 7-1-158 - NARA - 75639822 (page 12).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/3/35/1950_Census_Enumeration_District_Maps_-_Puerto_Rico_%28PR%29_-_Rio_Piedras_Municipality_-_Rio_Piedras_-_ED_7-1-158_-_NARA_-_75639822_%28page_12%29.jpg/800px-1950_Census_Enumeration_District_Maps_-_Puerto_Rico_%28PR%29_-_Rio_Piedras_Municipality_-_Rio_Piedras_-_ED_7-1-158_-_NARA_-_75639822_%28page_12%29.jpg)
File:1950 Census Enumeration District Maps - Puerto Rico (PR) - Rio Piedras Municipality - Rio Piedras - ED 7-1-158 - NARA - 75639822 (page 12).jpg - Wikimedia Commons
![1940 Census Enumeration District Descriptions - Puerto Rico - Rio Piedras County - ED 7-17, ED 7-18, ED 7-19, ED 7-20, ED 7-21 | DPLA 1940 Census Enumeration District Descriptions - Puerto Rico - Rio Piedras County - ED 7-17, ED 7-18, ED 7-19, ED 7-20, ED 7-21 | DPLA](https://nara-media-001.s3.amazonaws.com/arcmedia/census-1940/T1224/PR/m-t1224-00118-01511.jpg)
1940 Census Enumeration District Descriptions - Puerto Rico - Rio Piedras County - ED 7-17, ED 7-18, ED 7-19, ED 7-20, ED 7-21 | DPLA
![File:1950 Census Enumeration District Maps - Puerto Rico (PR) - Rio Piedras Municipality - Rio Piedras Municipality - ED 7-1-168 - NARA - 75639841.jpg - Wikimedia Commons File:1950 Census Enumeration District Maps - Puerto Rico (PR) - Rio Piedras Municipality - Rio Piedras Municipality - ED 7-1-168 - NARA - 75639841.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/1950_Census_Enumeration_District_Maps_-_Puerto_Rico_%28PR%29_-_Rio_Piedras_Municipality_-_Rio_Piedras_Municipality_-_ED_7-1-168_-_NARA_-_75639841.jpg/640px-1950_Census_Enumeration_District_Maps_-_Puerto_Rico_%28PR%29_-_Rio_Piedras_Municipality_-_Rio_Piedras_Municipality_-_ED_7-1-168_-_NARA_-_75639841.jpg)