Philadelphia Union Launch 2021 Secondary Jersey - SoccerBible
Philadelphia Union Kit History - Football Kit Archive
The 12 days of Union Kits-mas – The Philly Soccer Page
Philadelphia Union Kit History - Football Kit Archive
Club Football Shirts - The Best Football Shirt Collection In The World
– Sports kit history and comment, to inform and enlighten
A reason to believe: An ode to the 2022 Philadelphia Union - Brotherly Game
MLS Kit History - Football Kit Archive
The Union's new home kit: background and analysis – The Philly Soccer Page
FC Nantes Football Shirt Archive - Club Football Shirts
Philadelphia Union 2014 Third Kit
Philadelphia Union 2023 Away Kit