The NASM is the world's largest, most-visited collection of historical aircraft and spacecraft, and commemorate major milestones in flight and space exploration. This beautifully packaged, informative, square wall calendar with stunning photographs, displays museum's most important artifacts.

Smithsonian National Air and Space Museum 2019 12 x 12 Inch Monthly Square Wall Calendar by Hachette, NASM Aircraft Spacecraft History

The twentieth century witnessed an onslaught of technological advancements like never before. Among these many modern marvels, certain innovations are easily taken for granted. Take, for instance, the jet engine, which along with brilliant aeronautical engineering redefined the rules of warfare and made the incredible speed and convenience of commercial air travel possible. If you admire these magnificent, sleek machines, you are sure to appreciate this spectacular Jets square wall calendar.

Jets 2019 12 x 12 Inch Monthly Square Wall Calendar, Airplane Aircraft Military Flight

Steam-powered tractors have been around since the mid-1800s, but it was the internal combustion models of the early 20th century that truly revolutionized the world of agriculture. Weary draft animals and overworked farmers all of a sudden got an enormous helping hand in their never-ending struggle to plow large spreads of land and pull heavy loads from field to field. Celebrate the beauty of tractors in this one-of-a-kind wall calendar.

Tractors 2019 12 x 12 Inch Monthly Square Wall Calendar, Farm Rural Country