Handheld video game:Coleco Head to Head Electronic Baseball - Coleco — Google Arts & Culture
File:Sears Offense-Defense Electronic Baseball, Model No. 49-65094, Made In Taiwan, Copyright 1980 (Electronic Handheld Game).jpg - Wikimedia Commons
Vintage Handheld Baseball Electronic Game by Radio Shack - Etsy
Cimarron Sports : Best prices on Hack Attack eHack Electronic Baseball Pitching Machine
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File:Electronic Baseball by Entex Industries, Model -8001, Red LED, Made in Taiwan, Copyright 1979 (LED Handheld Electronic Game).jpg - Wikimedia Commons
Mattel Baseball
An Electronic Umpire? Baseball Tried It (In the 1950s!) - The New York Times
Vanderbilt used an electronic wristband system for calling pitches
File:Entex Baseball 3, Model 6007, Made In Taiwan, Copyright 1980 (Electronic Handheld Game).jpg - Wikipedia
File:Mattel Baseball, Model 2942-0320, Made in Hong Kong, Copyright 1978 (LED Handheld Electronic Game).jpg - Wikimedia Commons
1987 Tiger Electronic Baseball Handheld Game Vintage Collectible Tested Works ! | eBay
10 Classic Portable Games of the 1980s
Baseball by Micro Electronics - Old School Gamer Magazine
/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
Amazon.com: Mattel Classic Baseball Game : Toys & Games
Handheld video game:Mattel Electronics Baseball - Mattel, Inc. — Google Arts & Culture
Electronic Baseball from Basic Fun - YouTube
Old Handheld Video Games: Electronic Baseball 2 (1979) - YouTube
Vintage Tudor Tru Action Electric Baseball Game 1963 Electronic | eBay
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File:Coleco Head To Head Baseball, Model 2180, Made In Hong Kong, Circa 1982 (Electronic Handheld Game).jpg - Wikimedia Commons
Sign of times: MLB gives OK to electronic pitch calling
Future Stars Electronic Baseball Pitching Machine Combo Set - 1 Electronic Pitching Machine with 5-ball feeder, 1 24" telescoping bat, 5 foam baseballs - Walmart.com
PitchCom Extends to High School Baseball After MLB Success
