MARCH 1952
The Promotion
The surviving City of Detroit certificate marks Ralph Palmer's promotion into detective rank. The surviving document anchors the promotion record; personnel-card details, examination material, and administrative chronology are kept subordinate to the original evidence.
Captions and supporting chronology remain subject to source reconciliation where the personnel record is incomplete or conflicting.
DOCUMENT CHAIN
Examination → promotion → assignment.
The 1951 detective examination remains linked behind this page so the examination and promotion record can be read together.