A tip of the hat: The evolution of headwear badges of the U.S.
A tip of the hat: The evolution of headwear badges of the U.S. Military - Military Trader/Vehicles
Peaked cap - Wikipedia
Legion Uniform Cap Help - American Legion Flag & Emblem
Hats Off! Celebrating Headwear on National Hat Day - Heinz History Center
30s USmilitary ROTC A-1 Sport Jacket
Everything to know about the history of the baseball cap - Vogue Australia
Details and values of military antiques and relics - Military Trader/Vehicles
Collectible US Army First Sergeant Pins, black (7); gold (3), Used Militaria - Men's accessories
1920s Hat & Hair Style Fashion History Pictures 1920-1930
Details and values of military antiques and relics - Military Trader/Vehicles
Articles by David L. Burrows - Military Trader/Vehicles
A Look At The Legends Behind British Cap Badge Symbols