Here's a list of others who collect airchecks, surveys and stickers
Aircheck Collectors
Gary Pfeifer's Airchecks
Aaron Mintz Airchecks
Rob Zerwekh's Airchecks
Bob Gilmore's Airchecks
Dan Gulino's Airchecks
Mike Gallant's Airchecks
Bruce Bonner's Airchecks
Kent Galloway's Airchecks
Survey Collectors
Stickers