Emma Rueckert 

Notes:

a) St. Louis Globe Democrat, May 8, 1940, there's an ad under Businesses for Sale:
VARIETY STORE--Established over 50 years; leaving city. 2302 Menard.
Could have been placed by Emma, though she apparently still lived in the Menard apartment until her death in 1950. Possibly the girls sold the store but not the upstairs apartments.

b) Burial permit request posted in St. Louis Star and Times on 16 Mar 1950, p34. It states she was 78 and her address was 2302 Menard.

1910 Census, Ward 9, Dist 138, 1015 Emmet St., St. Louis, MO
#16/57 RUECKERT, Emma, head, 38, married once, 1 child, 1 living, born MO, parents born Germany, occupation: washing and cleaning, nature of industry says Pri__ familys (could be Prinate but can't tell for sure), reads and writes, rents house
Otto, son, 11, single, MO, Germany, Germany, reads and writes, went to school this year
CABRY (could be EABRY or FABRY), Laura, mother, 73, widowed, born Germany, parents born Germany, immigrated 1856, speaks English but does not read or write.

Also found 1910 census, Warren St, 18th Ward, St. Louis City: RUECKERT, Otto and Emilie. She was age 37 born in MO and both parents in Germany. Two kids Olinda, female, age 11, and William, male, age 7.

Side note: looks as if son Otto grew up to own a drugstore and married Florence B. Dieker (d. 1981). Does not appear they had any children (none listed in her obituary or his).
St. Louis Post Dispatch 19 Dec 1943, p24
RUECKERT, OTTO M. -- 3702A Oregon, asleep in Jesus, Thurs., Dec. 16, 1943, beloved husband of Florence Rueckert (nee Dierker), dear son of Mrs. Emma Schulze, our dear brother-in-law, uncle, nephew and cousin, at the age of 45 years.
Funeral Mon., 1 p.m., from Beiderwieden South Side Funeral Home, 3629 Chippewa st., to Concordia Cemetery.

St. Louis Post Dispatch
20 Aug 1921, page 3
BOY, KNOCKED FROM BICYCLE BY AUTO, DIES
Young Man, Alleged to Have Driven Machine That Hit Jerome Rock, Is Arrested Again
CAR TRACED THROUGH SEVERN PERSONS
Driver Picked Up Lad After Accident and Left Him on Sidewalk in Front of Father's Shop.
Otto Rueckert, 22 years old, a press feeder, of 2510 South Twelfth Street, was arrested early today, following the death oat the city hospital at 2:30 a.m. of Jerome Rock, 13 years old, son of Charles Rock, 1824 Shenandoah Ave, who, it is charged, was knocked from a bicycle and injured by an automobile driven by Rueckert at 4:20 pm Thursday at Jules street and Shenandoah avenue, his death being the result.
Rueckert is now held for the Coroner. He previously was arrested yesterday morning, charged with felonious wounding and leaving the scene of an accident and released on bond. his first arrest was delayed while police traced the ownership of the machine through seven persons and from the latest owner, Julius Buchardt of 403A St. George street, who had loaned it to Rueckert Thursday afternoon.
The Rock boy was riding west on the north side of Shenandoah avenue and Rueckert, driving south in Jules Street, was turning east on Shenandoah. Two women nearby heard the boy beg to be taken home after he was struck and saw the license number of the machine. Finally the boy was taken in the machine to his father's woodenware shop at 2099 Shenandoah avenue and left on the sidewalk. His uncle, William Wiedeman, who lives upstairs, carried him in and then had him taken to the city hospital.
Rueckert told police today that he did not think the boy had been seriously hurt.