Police Positive Special vs Army Special - frame size comparison

From the Vault: Colt Police Positive Revolver

engraved Army Special with Ideal Holster Stock

Colt's Police Positive Special - Shooting Times

Colt's Police Positive Special - Shooting Times

What is the difference between a Colt Army Special and a Colt Detective Special? - Quora

Smith & Wesson revolver frame sizes – Part 1 - the differences in models.

Question on aColt Army Special

From the Vault: Colt Police Positive Revolver

Rifleman Q&A: Short Or Long Frame Colt Stocks?

Framed: Revolver Sizes & What They Mean