Battle over artificial turf on football fields
A History of the NFL in 95 Objects: Artificial Turf - Sports Illustrated
Artificial turf vs. real grass: NFL's ongoing problem with playing surfaces
Artificial Turf: Change From the Ground Up - Sports Illustrated
From AstroTurf to 'frankenturf': Inside the NFL's behind-the-scenes battle to fix its turf problem
TUCKAHOE TURF FARMS, INC.
A History of the NFL in 95 Objects: Artificial Turf - Sports Illustrated
Basin Sod and Gravel - Spokane Valley
A History of the NFL in 95 Objects: Artificial Turf - Sports Illustrated
NFL players urge league to nix turf, go with grass - The Iola Register
Grass Field Rolls In At University Of Phoenix Stadium
How AstroTurf Got Kicked Off the Field