1910 U.S. Census, Baltimore City, Maryland:
1st Ward, Enumeration District 10, page 198A
600 Luzerne Street
Dwelling 306, Household 352
Barnes, Wilmer, head, male, white, 32, married once, married for four years, born in Maryland, both parents born in Maryland, native tongue English, laborer in can factory, wage worker, not at work on April 14th, not out of work previous 12 months, can read and write, rents, lives in house
Barnes, Mina E., wife, female, white, 31, married once, married for four years, born in Maryland, father born in Maryland, mother born in Germany, speaks English, no occupation, can read and write
Barnes, Wilmer F., son, male, white, 3, single, born in Maryland, both parents born in Maryland, no occupation
[N.B. Next door at 602 Luzerne is Minnie’s sister Elizabeth and her family.]

On 12 September 1918, Wilmer Barnes completed a draft registration card, giving his full name as Wilmer Barnes of 600 S. Luzerne Street, age 40, born 14 November 1878, white, native born citizen, occupation press hand for National E and St Co. at Paca[?] and Ostend Streets, nearest relative Minna Barnes of 600 S. Luzerne Street, medium height, medium build, gray eyes, brown hair. [World War I Draft Registration Card, Baltimore City, Maryland, Roll 1654042.]

1920 U.S. Census, Baltimore City, Maryland
1st Ward, Enumeration District 11, page 18B
600 Luzerne Street
Dwelling 334, Household 377
Barnes, Wilmer, head, owns radio set, male, white, 43, married, can read and write, born in Maryland, both parents born in Maryland, speaks English, occupation presser in enamel works, wage worker
Barnes, Minna, wife, female, white, 41, married, can read and write, born in Maryland, both parents born in Germany and spoke German, speaks English, no occupation
Barnes, Wilmer Fred, son, male, white, 13, single, in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, no occupation
1930 U.S. Census, Baltimore City, Maryland
3rd Ward, Enumeration District 4-15, Sheet 17B
600 Luzerne Avenue
Barnes, Wilmur, head, rents for $20, male, white, 52, age at first marriage 27, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, press-hand in can-factory, wage worker, at work previous day, not a veteran
Barnes, Mina C, wife, female, white, 51, married, age at first marriage 26, not in school, can read and write, born in Maryland, both parents born in Germany, speaks English, no occupation
Barnes, Wilmur F, son, male, white, 23, single, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, clerk in insurance trade, wage worker, at work previous day

The 1921 Baltimore City Directory lists on page 364:
Barnes, Wilmer lab h 600 e Luzerne av

1930 U.S. Census, Baltimore City, Maryland
3rd Ward, Enumeration District 4-15, Sheet 17B
600 Luzerne Avenue
Barnes, Wilmur, head, rents for $20, male, white, 52, age at first marriage 27, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, press-hand in can-factory, wage worker, at work previous day, not a veteran
Barnes, Mina C, wife, female, white, 51, married, age at first marriage 26, not in school, can read and write, born in Maryland, both parents born in Germany, speaks English, no occupation
Barnes, Wilmur F, son, male, white, 23, single, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, clerk in insurance trade, wage worker, at work previous day

1940 U.S. Census, Baltimore City, Maryland
2nd Ward, Sheet No. 1B
1722 Fleet Street
Household 180, Renting, not living on a farm
Barnes, Wilmer, head, male, white, 62, married, not in school, 4th grade completed, born and living in Maryland, not on farm in 1935, employed for pay, worked 40 hours prior week, press for st[illegible] company, paid worker, weeks worked in 1939 52, income $1,000, no other income
Barnes, Minnie C., wife, male [sic], white, 61, married, not in school, 6th grade completed, born and living in Maryland, not on farm, not at work

On 26 April 1942, Wilmer Barnes registered for the World War II draft, giving his address as 4009 Biddison Lane, Baltimore, Maryland; phone Ha. 2270; age 64; born 14 November 1877 in Baltimore, Maryland; name of person who will always know your address Minnie C. Barnes, wife, same address; unemployed for 20 months due to coronary sclorosis; race white; height 6’; weight 180; brown eyes; brown hair; ruddy complexion.

A death notice stated:
BARNES.—Suddenly, on March 20, 1944, WILNER, beloved husband of Minnie C. Barnes (nee Schneider). Funeral services from the late residnece, 419 East North avenue, of which due notice will be given. [The (Baltimore) Sun, 21 March 1944, page 17.]

A death notice stated:
BARNES.—Suddenly, on March 20, 1944, WILNER, beloved husband of Minnie C. Barnes (nee Schneider), of 4009 Biddison Lane. Funeral services are to be held at H. Sander & Sons, North avenue and Broadway. Due notice. [The (Baltimore) Sun, 22 March 1944, page 15.]

A death notice stated:
BARNES.—Suddenly, on March 20, 1944, WILNER, beloved husband of Minnie C. Barnes (nee Schneider). Funeral services are to be held at H. Sander & Sons, North avenue and Broadway, on Thursday at 11 A.M. Interment in Baltimore Cemetery. [The (Baltimore) Sun, 22 March 1944, page 15, and 23 March 1944, page 17.]