Writing to retired players often produces quicker responses and higher success rates than current players. Almost all of the addresses for retired players can be found in Jack Smalling Baseball Autograph Handbook, a must for any true collector.
Sid Bream, 2 weeks, 2 signed cards and included a small comic tract
George Brett 2 weeks, sent a 4x6 color photo with a preprinted autograph on the back
Brett Butler signed one card for me in just 1 week
Joe Carter, 2 months, 2 signed cards
Darren Daulton Former Phillies catcher signed 2 cards with a return time of 1 month.
Lenny Dykstra, 10 days, 1 signed card
Greg Gagne signed both cards and added one of his with a bible verse on each one. This former Twin and Dodger shortstop took just 10 days.
Goose Gossage signed 1 card with a return time of 2 weeks. One of the greater relievers of his generation.
Pedro Guerrero, 2 weeks, 2 signed cards
John Kruk 2 weeks, 2 signed cards, kept my cards and sent two of his own including his 87 Donruss rookie.
Charlie Leibrandt 9 months, signed 1 card. A long wait for this former Brave and Royal southpaw.
Mark Lemke 6 weeks, 1 of 2 signed cards
Dale Murphy signed 2 cards with a return time of 6 weeks. This was sent c/o his church. A great player in the 80's with the Braves and an even greater person.
Phil Niekro c/o home address, 8 days, 2 signed cards
Alejandro Pena, 2 months, 1 signed card. Pena was a great middle reliever and closer for the Braves and Dodgers, has a cool autograph too
Kirby Puckett received signed postcard from this Twins great after a long wait of 6 months. Unfortunately he didn't sign my cards.
Nolan Ryan received a 4x6 black and white autopen photo in about 2 months.
Steve Sax signed 1 of 2 cards with a return time of 2 weeks.
Bruce Sutter 1 month, 1 signed card
Tim Wallach 2 months, 1 signed card. Tim was an All-Star third baseman for the Expos in the 80's.