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1930 census:
1939 North New Hampshire Avenue (Value: $15,000): 1) Robert E. Blackburn, owner and head of household; 68 year old white married male; married at age 33; born in Missouri; father born in Kentucky, mother in Missouri; not working. 2) Louise D. Blackburn, wife; 63 year old white married female; married at age 28; born in Illinois; father born in Germany, mother in Illinois; not working. (20th ED, page 3B, lines 96-97).

1940 Census:
1939 New Hampshire Avenue (Value $8,000): 1) Robert E. Blackburn, head of household; white married male 78 years of age; born in Missouri; not working. 2) Louise D. Blackburn, wife; white married female 72 years of age; born in Illinois; not working. (ED 60-82; Page 18B; Lines 44-45).