Earl K. Leonard
Agency patch
Patrolman

Earl K. Leonard

Chicago Police Department — Chicago, IL
Felonious
End of Watch June 9, 1929
Age 38
Badge 4558
The Vigil Panel 57 ›
Gender Male

Incident

Patrolman Earl K. Leonard was shot and killed during a traffic stop. He had stopped a traffic violator and was in the process of an arrest when a friend of the offender approached and shot him at the intersection of Lotus Avenue and Madison Street. The 21-year-old suspect was arrested, convicted of first-degree murder, and sentenced to life in prison. On September 15th, 1939, during an escape attempt he and two other lifers slipped drugs into the coffee of 11 guards leaving two in critical condition. On September 29th, 1952, he was released from prison after it was determined the trial judge gave an instruction to the jury that was ruled unconstitutional in 1935.

Survivors

Patrolman Leonard was survived by his wife and four children.

In Our Keeping

Permanent identifier
BO-US-IL-00B98859
Stewardship
Maintained by NeuraWeb Global Inc.
Added to badge.nw
April 2, 2026
Last updated
July 23, 2026

Honored here by 1 sentinel - 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
Patrolman Leonard served with the Chicago Police Department.
Thank you for your service to the Chicago community. Gone but never to be forgotten.
Rest easy, Patrolman Leonard.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Location Chicago, IL
Platform Identity cpd.cook.il.us.gov.nw

Service Record

End of Watch June 9, 1929
Age 38
Badge Number 4558
Gender Male

Incident Details

Cause Felonious
Weapon Gun; Unknown type
Offender Released in 1952

Patrolman Earl K. Leonard is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.

In IL, 842 of 1,318 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 63.9% of this state's fallen. That is 9.7 percentage points above the national rate of 54.2%.

At Chicago Police Department, 396 of 571 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 69.4% of this agency's fallen.

Chicago Police Department
396
of 571 officers
69.4% Felonious
IL — Statewide
842
of 1,318 officers
63.9% Felonious
Nationwide
17,623
of 32,508 officers
54.2% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. Earl K. Leonard's cause is highlighted.

Felonious
17,623 (54.2%)
Accident
10,088 (31%)
Illness
2,974 (9.1%)
Cardiac
1,306 (4%)
Undetermined
260 (0.8%)
Suicide
256 (0.8%)
vehicular
1 (0%)

How Earl K. Leonard Compares

Age at End of Watch
38
This officer
Avg for Felonious: 39.0 years

Offender Outcome

Released in 1952

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. Earl K. Leonard is highlighted in Jun.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,517
May
1,505
Jun
1,443
Jul
1,587
Aug
1,516
Sep
1,553
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. Earl K. Leonard was killed by gun; unknown type.

Gun; Unknown type
5,083
Handgun
2,077
Shotgun
922
Officer's handgun
909
Automobile; Alcohol involved
530
Rifle
518

Incident Location