This is the definitive resource for ballfield dimensions, construction and renovation. The 48-page version 3.0 is an absolute must-have for sports
Ballfield Dimensions & Reference Guide
Base Sizes (2023 rule change), Glossary
Laying Out Your Ballfield - Groundskeeper University
Complete Outfield Dimensions
Baseball
People often ask why baseball stadiums have different dimensions
Pony 14U : PONY Helpdesk
MLB Park Factors & Stats
Six-Man Baseball – Society for American Baseball Research