Working through a Publisher

[JayGreg]

Hi,

I'm currently seeking to get the autograph of the authors Chris Riddell and Paul Stewart, however, it appears I must go through their publishers as any other address is not available.

I'm just writing to ask how I should go about doing this? Do I need to have three envelopes, one for the publishers directing them to forward it to the authors, one for the authors themselves and one for the return journey? I'm currently unsure of the correct course of action, any help anyone can give would be appreciated.

Thanks,

Jay