Each 4-pack contains four different covers filled with aviation diagrams and schematics of planes

and annotated clouds

Haeckel Jellyfish

Seal your letters with a reminder to just breathe

did you think humans were number one

Bacteriophage Wax Stamp Entomology Each 4-pack contains four differentWhat better way to seal your letters than with a bacteriophage wax stamp! These microscopic, ubiquitous viruses, with their DNA RNA filled protein capsid heads and ominous looking long tail fibers, are just the upgrade your letter writing needed! Wax stamps make great gifts for people who already have everything, plus they give your stationery some classic science flair. Each stamp comes in its own kraft box sealing wax is sold separately so you can