Philadelphia Union Kit History - Football Kit Archive
Football Kit Archive
MLS Kit History - Football Kit Archive
Football Kit Archive
Union unveil fan-designed jersey for upcoming 2021 season
Philadelphia Union
Philadelphia Union Kit History - Football Kit Archive
MLS Kit History - Football Kit Archive
The 12 days of Union Kits-mas – The Philly Soccer Page
Philadelphia Union Kit History - Football Kit Archive
Evolution of a kit: Bethlehem Steel FC – Society for American Soccer History
FC Nantes Football Shirt Archive - Club Football Shirts
MLS Kit History - Football Kit Archive