| Birth | Dec 1895 | District of Columbia | | | |
| Birth | 7 May 1897 | Washington City, District Of Columbia, District of Columbia, United States | | | |
| Birth | 7 May 1897 | Dictrict of, Columbia, Arkansas, United States | | | |
| Birth | 7 May 1897 | Washington D.C. | | | |
| Residence | 1900 | Washington, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1900 | Washington D.C. City, Washington, District of Columbia | | | |
| Residence | 1910 | Election District 3, Prince George's, Maryland | | | |
| Residence | 1910 | Election District 3, Prince George's, Maryland | | | |
| Residence | 1910 | Election District 3, Prince George's, Maryland | | | |
| Residence | 1920 | Washington, Washington, District of Columbia | | | |
| Residence | 1920 | Washington, Washington, District of Columbia | | | |
| Residence | 1920 | Washington, Washington, District of Columbia | | | |
| Residence | 1920 | Washington, Washington, District of Columbia | | | |
| Marriage | 21 Apr 1920 | Washington City, District Of Columbia, District of Columbia, United States - Adam Oscar Ernst ZOELLNER | | | |
| Residence | 1930 | Providence, Fairfax, Virginia | | | |
| Death | 5 Nov 1994 | MD | | | |
| Death | 5 Nov 1994 | Maryland, United States | | | |
| Alt name | | May HEFLIN | | | |
| Alt name | | Helen Marie Mae HEFLIN | | | |
| Alt name | | Helen Marie HEFLIN | | | |
| Alt name | | Helen Maggie HEFLIN | | | |
| Burial | | Washington D.C. | | | |