Three NL Teams in Throwbacks this weekend – SportsLogos.Net News
Houston Astros Wear Throwback Colt .45s Jerseys on Team's 50th Anniversary, News, Scores, Highlights, Stats, and Rumors
Houston Astros - Wikipedia
Astros get MLB's OK to leave pistol on throwback jerseys
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The Stars Rise Again
Astros never shy about showing their colors
The 1965 Astros—one team, many hats — Todd Radom Design
1962 HOUSTON COLT .45s Print Houston Astros Vintage
Houston Astros Announce Throwback Games in 2015 – SportsLogos.Net News
Retro jerseys, bobbleheads, Flashback Fridays: celebrating 50 years in style., by MLB.com/blogs
Houston Astros - Wikipedia
The 1965 Astros—one team, many hats — Todd Radom Design
Astros, Angels Wearing 1965 Throwbacks – SportsLogos.Net News