This year, the New York chapter of the American Institute of Graphic Arts turns 30. To celebrate, they asked 30 of New York's greatest designers to create commemorative posters honoring the past three decades of the organization. Legends like Milton Glaser, Michael Bierut, Paula Scher, and Maira Kalman were among the designers chosen. Each piece captures the individual designer's personal thoughts and memories of the chapter. Grab yours at AIGA's EtsyNo matter which designer you consider your favorite, there's a piece of the (birthday) cake for everyone, but act quick, there is a limited edition of 100 (10 signed, 90 unsigned) for each poster. [AIGANY]