Final answer:
Milton Glaser's most famous creation is the 'I ♥ NY' logo, emblematic in graphic design and representing New York. His impact is also showcased in 'The Design of Dissent', co-authored with Mirko Ilic, exploring graphics with social and political significance.
Step-by-step explanation:
The most famous creation of Milton Glaser, one of the founders of Push Pin Studios, is the I ♥ NY logo. This design has become a widely recognized symbol and represents a significant milestone in graphic design history. Glaser's work in graphic design extends beyond this logo, encompassing a broad range of socially and politically driven graphics as well, which are discussed in the book 'The Design of Dissent' authored by Milton Glaser and Mirko Ilic. The book highlights the role of graphic design in social and political commentary and the importance of visual communication in shaping public discourse.