Writing Cast Memebers

I apologize if this is the incorrect board to post this question to. I am new to the site, but was looking into writing some cast members of the musical Anastasia. Wasn't sure how to go about doing that. My husband informed me that this was something you used to be able to do...write cast memebers of shows, Wicked, Addams Family, etc. Is this still possible? If so, how do I go about finding the contact information or the order of how I do this?

Thank you so much! Do you know if they ever write back?

Thank you so much! My husband is thrilled to hear this! Do you have to send a pre stamped addressed envelope for them to send things back? Or will they write back on their own?

Who have you gotten stuff back from?

This thread includes a lot of info about writing to cast members and who responds.

What about Derek Klena? That's who he's writing along with Christy. He's just writing letters and sending a Sase with it.