I sent a LOR and SASE (no pic needed per website http://www.travolta.com/site/fans) to John Travolta (P.O. Box 3560 Santa Barbara, CA 93130-3560) on 8/25/15 and received back a nice B&W 8x10 on 10/5/15. It says "Congratulations Shawn & Casey, John Travolta. Dreams come true!"
Sent an SASE, so addresses were mine, no need to include pic.
Successes: Tim Allen, Robbie Amell, Tori Amos, Bob Barker, Tony Blair, Mike Brey, Carol Burnett, Jimmy Carter, Chevy Chase, Kelly Clarkson, Glenn Close, Michael Emerson, Carrie Fisher, Jeff Foxworthy, Linda Gray x2, Grant Gustin, Florence Henderson x2, Jimmy Kimmel, Judge Judy, Lisa Lampanelli, Cyndi Lauper, Jennifer Lawrence, Susan Lucci, Seth MacFarlane x2, Reba McEntire, Julie Newmar, Candice Patton, Penn & Teller, Maury Povich, Redfoo, Chandler Riggs, Rupaul, Martin Sheen x2, Eric Stonestreet, Jon Taffer, John Travolta, Michelle Vissage, Dawn Wells, Betty White, Mike Wolfe
PrePrint Success: Drew Barrymore, Halle Berry, Nicholas Cage, George W. Bush, Alyson Hannigan, Dwayne Johnson, Angelina Jolie, Barack & Michelle Obama, Debra Messing, Kate Mulgrew, Katy Segal, Ben Stiller, Henry Winkler See all my autographs at: https://sites.google.com/site/shawnsautographs/
I have so many private and email addresses: 20 private emails and 39 private addresses
IP successes: Gary Sinise(8/4/13), Garth Brooks(2005), Jeff Traxler-author and producer of the movie Memorial Day (October 2014), Michael Rooker and Karl Urban(5/2/15 at wizard world comic con), Michael Biehn and Chris Mulkey(10/25/15 at Crypticon Minneapolis), Falk Henschel, Franz Drameh, James Marsters, David Ramsey(5/7/16 Wizard World Minneapolis)
2016 successes: David Eigenberg(x2), Candice Patton, Scott Bakula, Arnold Schwarzenegger, President Barack Obama, JK Rowling, David Dastmalchian, Octavian Kaul