I have two Australian wildlife calendars that I will airmail next Monday to the 7th and 17th persons who write to me and tell me that they have invited two friends to subscribe to Wilson's Almanac from the subscription box in the right-hand column on this page.
I have an Aussie bird calendar for the 27th person who writes to me. My email addy is in the left-hand column here.
Put CALENDAR in the subject header of your email to me and I will contact the winners for their postal address.
No need to give me your friends' names or anything else. Let's do it on trust.