Tampa Bay Rays at Chicago Cubs

The Cubs continued their 100th anniversary celebration of Wrigley Field with 1988 throwbacks today, against the Tampa Bay Rays, who debuted a new road version of their 1979 Fauxbacks.

St. Louis Cardinals at Chicago Cubs

As part of their continuing 100th Anniversary of Wrigley Field celebration, the Cubs wore their 1978 road uniforms - at Wrigley - while the Cardinals (who actually also wore powder blue road uniforms in 1978) were given gray fauxbacks.

Atlanta Braves at Chicago Cubs

The Cubs continue their 100th anniversary celebration of Wrigley Field by throwing back to 1969, along with the Atlanta Braves.

Miami Marlins at Chicago Cubs

The Cubs continued their 100th anniversary of Wrigley Field celebration by throwing back to 1942 with the Miami Marlins.  The Marlins are wearing throwbacks of the minor league Miami Sun Sox.

Chicago Cubs at Seattle Mariners

Teams wore 1909 throwbacks.

Chicago Cubs at Boston Red Sox

In their first matchup at Fenway Park since 1918, the Cubs and Red Sox wore uniforms from that year in their interleague matchup.

Chicago Cubs at Los Angeles Dodgers

The Dodgers again wore the satin 1944 night uniforms of the old Brooklyn Dodgers (and again in the afternoon), and this time the Cubs joined in on the fun, wearing their 1944 uniforms as well.

As Simply Moono writes in the comments:

The Cubs in their 1944 road greys with the red underline under a blue radially-arched "CHICAGO" wordmark. Royal Blue whole-socks with a "football-style" white oversock insert and three red
stripes.Royal Blue hat with a red wishbone "C".

Dodgers in their 1944 Brooklyn er-satin throwbacks. White raglan-stripes in the sleeves, white belt chambers and white tackle-twill numbers with a white "Brooklyn" script on the front of the jersey.
Powder-blue base jersey and pant with Dodger Blue stirrups/whole-socks mixture. Hat is Royal/Dodger Blue with a fancy "B".

Couldn't have said it better myself.

The following seven pictures are from VinScullyIsMyHomeBoy.com who sat near the Cubs bullpen. Apparently all the players (in the first five pics) were distracted, and you can see what they were looking at in the sixth picture. Read all about it here.

Atlanta Braves at Chicago Cubs

Thanks to Mark in Shiga who in the comments mentions this one, the Atlanta Braves and Chicago Cubs played a game to commemorate the 60th anniversary of WGN Cubs telecasts by both wearing 1948 duds. The Braves were the Boston Braves and the according to Bill Henderson, the game was "broadcast was in black and white with 1948-era camera angles (no centerfield batter shots, no instant replay)."

Chicago Cubs at Chicago White Sox