Everyone's favorite period drama about the advertising industry—Mad Men—returns on April 13th for its final season. In anticipation, Time has collected a series of photos taken in the 1960s, when the real scions of advertising populated New York City's Time-Life Building. It is a privileged glimpse into the real world of the AMC series' fictional Don Draper.

Located at 1271 Avenue of the Americas and designed by Harrison, Abramovitz & Harris in 1959, much of the building's mid-century mod styling is still intact. These pictures take us back to the days when clean lines and rich materials dominated office architecture.

Step Back into the Real World of Mad Men
Step Back into the Real World of Mad Men

Every detail in Mad Men is researched and art directed to ensure it accurately portrays the real design culture of the era. These photos show us how accurate the show really is—even the teapots and clocks match the modern style.

Step Back into the Real World of Mad Men
Step Back into the Real World of Mad Men

The ceiling, the floor, the mural—every surface is treated as a work of art. There are no cheap tile floors or drop ceilings in the world of Mad Men. The architecture represented the modern luxury of the era—not excessive, but sophisticated.

Step Back into the Real World of Mad Men
See more photos on Architizer.