City Directories – Miriam J. Robbins

Detroit City Directory_1920-1921_Conversion of Street Numbers

Historya Osady i Parafij Polskich w Detroit, Mich. — 1857-1907
(The History of Polish Settlements and Parishes in Detroit, Michigan — 1857-1907)

1905-1906 Detroit City Directory_Abbreviations

1920-1921 Detroit Street & Avenue Guide and Directory of Householders
In compliance with a City of Detroit Ordinance which took effect on 01 January 1921, the streets and avenues in Detroit were renumbered in order to make entire block numbers for the city make more sense.
A – Bessemore
Bessemore – Carter
Carter – Connors
Connors – Ellery
Ellery – Fort W.
Fort W. – Gratiot
Gratiot – Helen
Helen – Joseph Campau
Joseph Campau – Lenox
Lenox – Marlborough S.
Marlborough S. – Mt. Elliott
Mt. Elliott – Pingree
Pingree – St. Jean
St. Jean – Superior
Superior – Tyler
Tyler – Whelan
Whelan – Zenow

Old and New House Numbers 
Detroit City Street Conversion — 1921

1923 Detroit City Directory — Cemeteries and Churches

1925 Detroit City Directory — Catholic Parishes & Priests in Detroit

One-Step Webpages by Stephen P. Morse

U.S. City Directories — 1822-1995 (ancestry.com)