Below is a list of resources used to verify the historical statistics, information, and articles located on RetroSeasons. Many of the references listed below are seminal works in the archival and research of sports history. League and team logos are trademarked by their respective owners and are included for historical perspective. If there are any questions about user-submitted photos or articles, please feel free to contact us.
MEDIA ARCHIVES
- Motion Pictures in Library of Congress – Moving Images Research Center
- Library of Congress – Historic Newspaper Archives
- USC Library – Multimedia Archives
- Rare Sports Films – Old-time sports on high-quality DVD
- The Rucker Archive – Collection of hundreds of thousands of 19th and 20th-century images
- RetroSportsRadio – Vintage collection of radio baseball broadcasts
- ProQuest – Multimedia Historical Database
- Springfield College – College Archives Digital Collection
- Internet Archive – Non-profit library of millions of free books, movies, software, music, and websites.
- Hathi Trust – Digital Library of Historic Documents
- Sanborn Fire Insurance Maps – Detailed maps of U.S. cities and towns in the 19th and 20th centuries
- Creator Mix – Music library for content creators created by Nick and Dee Nimmin.
- Classic Baseball on the Radio – Vintage collection of radio baseball broadcasts
- Classic Sports Rewind – Vintage collection of NFL radio broadcasts
- Classic Sports Radio Network – Vintage collection of NFL radio broadcasts
- Epaddon – Vintage collection of New York radio and TV broadcasts
- InternetRadio – Streaming audio library
- RadioGuide – Streaming audio content
SPORTS HISTORY
- Sports Leagues and Teams: An Encyclopedia, 1871 Through 1996 – Printed Material by Mark Pollak, 1998.
- Stats Crew – Historical Sports Statistics
- Pro Sports Transactions – every transaction in the history of five popular North American professional sports
- Sports-Reference – A group of sites providing both basic and sabermetric statistics and resources for sports
- Joyce Sports Research Collection – University of Notre Dame’s Rare Book Collection
- SportsLogos.net – Chris Creamer’s Compilation of Historic Sports Logos
BASEBALL
- Major League Baseball Stats (and API) – Official records and historical stats for the MLB
- Society for American Baseball Research (SABR) – Non-profit baseball research organization
- The Baseball Databank – An Open Data collection of historical baseball data
- Retrosheet – Some information used here was obtained free of charge from and is copyrighted by Retrosheet.
- Sean Lahman – Baseball, data, and storytelling
- Baseball Cyclopedia – Printed Material by Ernest J. Lanigan, 2005
- The Baseball Cube – Database of historical baseball player and team statistics
- Baseball Think Factory – Freely accessible, engaging, rigorous, and entertaining baseball content
- Kinescope Steals Home – Old Baseball Game broadcast video and films
- 19th Century Baseball – Baseball in the 1800s
- Center for Negro League Research – Research and preservation of the history of black baseball in America
- Beadle’s Dime Base-Ball – 19th Century Baseball Handbooks
- Agate Type – Reconstructing Negro League and Latin America Baseball History
- SeamHeads – Negro League Database
- Clem’s Baseball – Welcome to baseball stadium heaven
- Bill James Online – American baseball writer, historian, and statistician
- Baseball History Comes Alive – Old-Time Baseball Photos And Essays
- ProtoBall – Supporting Researchers and Writers on Baseball’s Origins
- Guide to Baseball Literature – Printed Material by Anton Grobani
- Our Game – Blog of Official MLB Historian John Thorn
- Baseball Guides – Mark D. Aubrey compilation of baseball publications
- John Thorn – Official Historian for Major League Baseball
- Sporting Life Magazine – Base Ball, Trap Shooting and General Sports
- Total Baseball – Pre-Internet electronic collection of baseball statistics
FOOTBALL
- National Football League Stats (and API)- Official records and historical stats for the NFL
- Pro Football Researchers Association (PFRA) – Non-profit football research organization
- DraftHistory – NFL Draft History and Analysis
- ProFootballArchives – Historical Football Stats
- FootballDB – The Football Database
- JT-SW Football – Historical Football Stats
- Antique Football – Historical collection of football literature
- Guide to Football Literature – Printed Material by Anton Grobani
- Gridiron Uniform Database – representations of every uniform that has been worn in the NFL
- Helmet History – historical view of each teams’ helmet history, all through pictures.
BASKETBALL
- National Basketball Association Stats (and API)- Official records and historical stats for the NBA
- Association for Professional Basketball Research (APBR) – Non-profit basketball research organization
- Pro Basketball Encyclopedia – A complete history of pro basketball’s early years
- Land of Basketball – Information About NBA Players, Teams and Championships
- VintageBasketball – Historical collection of basketball literature
- Remember the ABA – A much-needed space for ABA fans to share their favorite memories
- NBA Hoops Online – Unique basketball history and stats
- Cages to Jump Shots – Printed Material by Robert Peterson, 1990
- 24 Seconds to Shoot – Printed Material by Leonard Koppett, 1968
HOCKEY
- National Hockey League Stats (and API) – Official records and historical stats for the NHL
- Society for International Hockey Research (SIHR) – Community of writers, statisticians, collectors, broadcasters, academics, and fans of hockey history.
- The Trail of the Stanley Cup: Vols. 1, 2, 3 – Printed Material by Charles L. Coleman, 1976
- Hockey Hall of Fame – History of the Game – Printed Material by Dan Diamond and Joseph Romain, 1989
- HockeyDB, The Internet Hockey Database
- Hall of Fame Hockey Store – Extensive collection of historical hockey literature
- QuantHockey – Complete NHL, KHL, WHA, SHL, and Liiga stats for all seasons and players.
- HockeyGods – Covering all types of hockey imaginable
- PuckStruck – The culture of hockey, and vice-versa
- CapFriendly – NHL Contract details, Salary Cap tracking, Draft and CBA info
- Hockey Databank Project – A freely available database for major league professional hockey
- The information used herein was obtained free of charge from and is copyrighted by the Hockey Databank project. For more information about the Hockey Databank project please visit https://groups.io/g/hockey-databank/topics