Wrigley Field historical sleuthing: 1916-22 edition - Bleed Cubbie
The top 10 Cubs stories of the 2010s, #3: The renovation of
How Wrigley Field got lights, night games in 1988
The History of the Chicago Cubs – Giordanos
Wrigley Field renovations - Bleed Cubbie Blue
Wrigley Field historical sleuthing: The very first day the
Wrigley Field renovations - Bleed Cubbie Blue
How Wrigley Field got lights, night games in 1988
Cubs history: The Wrigley Field scoreboard under construction
Looking Back: The Rich History of Chicago Cubs Sports Memorabilia
Ryan's Monday morning Cubs thoughts for May 2 - CHGO
Chicago's Wrigley Field turns 100
Wrigley Field: A Century of Survival – Society for American
Wrigley Field renovations - Bleed Cubbie Blue