File:Electronic Baseball by Entex Industries, Model -8001, Red LED, Made in Taiwan, Copyright 1979 (LED Handheld Electronic Game).jpg - Wikimedia Commons
Mattel Electronics Baseball - The First Handheld Game Console, 2018 Review - YouTube
Amazon.com: Mattel Classic Baseball Game : Toys & Games
Old Handheld Video Games: Electronic Baseball 2 (1979) - YouTube
Amazon.com: World's Coolest Mattel Electronic Games - Baseball Handheld Games : Worlds Coolest: Toys & Games
ENTEX ELECTRONICS 1979 HANDHELD ELECTRONIC BASEBALL GAME | eBay
/pic131289.jpg "Electric Baseball | Board Game | BoardGameGeek")
Electric Baseball | Board Game | BoardGameGeek
An Electronic Umpire? Baseball Tried It (In the 1950s!) - The New York Times
1987 Tiger Electronic Baseball Handheld Game Vintage Collectible Tested Works ! | eBay
Coleco Head to Head Baseball
File:Sears Offense-Defense Electronic Baseball, Model No. 49-65094, Made In Taiwan, Copyright 1980 (Electronic Handheld Game).jpg - Wikimedia Commons
George Kell designed an electronic sign-stealing operation more than 60 years ago - Vintage Detroit Collection
Mattel Baseball
File:Mattel Baseball, Model 2942-0320, Made in Hong Kong, Copyright 1978 (LED Handheld Electronic Game).jpg - Wikimedia Commons
Electronic Baseball from Basic Fun - YouTube
Vanderbilt used an electronic wristband system for calling pitches
/cdn.vox-cdn.com/uploads/chorus_asset/file/20045027/tiger_electronics_baseball_game.jpg "Remembering 1989 All-Stars via Tiger Electronics handheld game - Athletics Nation")
Remembering 1989 All-Stars via Tiger Electronics handheld game - Athletics Nation
Mattel Electronic Handheld Classic Baseball Game, 2001 - A Grand Slam! - YouTube
Electronic Baseball Ticket Electronic Invite Birthday DIY | Bobotemp
PitchCom Extends to High School Baseball After MLB Success
MLB looking at electronic system for calling pitches | AP News
Handheld video game:Mattel Electronics Baseball - Mattel, Inc. — Google Arts & Culture
File:Coleco Head To Head Baseball, Model 2180, Made In Hong Kong, Circa 1982 (Electronic Handheld Game).jpg - Wikimedia Commons
Handheld video game:Coleco Head to Head Electronic Baseball - Coleco — Google Arts & Culture
Baseball by Micro Electronics - Old School Gamer Magazine
