Chicago Cubs 150th Anniversary 39THIRTY Cap | Official MLB®。Chicago Botanic Gardens Limited Edition \"40th anniversary\" members baseball hat with adjustable velcro back. my mother collects what she can from the botanic gardens membership, and this came from her, but I can not find any evidence she even wore it. The removable paper tag is still inside. The CBG\'s 40th anniversary was in 2012. makes a lovely gift for the green thumb in your life, and you\'ll get points for thoughtfulness if you are celebrating a 40th anniversary with them, even if that is friendship! Collectible, CBG, Chicago Botanic Gardens, 40th anniversary, green thumb