I just got my 2013 calendar from Adventure Cycling, and was surprised to see how many tandems (and triplets) are represented in it. First off, and as a bit of a shock, a photo I took of my son and our Santana triplet on a tour of the Great Allegheny Passage last year was chosen as the featured photo for March! Woo hoo! But at the bottom of each month there are small pics of touring cyclists taken at ACA's Missoula HQ. A lot of them are of people touring on tandems (and one other triplet). Pretty cool to see how well-represented the big bikes are.