As faculty members of the landscape architecture department of the University of Pennsylvania, Laurie Olin and Robert Hanna founded the partnership Hanna/Olin, Ltd. Through their collaboration in academia, in 1976 Olin and Hanna took on their first project, the design of the Johnson & Johnson Baby Products Corporate Center in Skillman, New Jersey, executed in collaboration with I. M. Pei & Partners, now known as Pei Cobb Freed. The pair continued through other work, such as the ARCO headquarters, Johnson & Johnson World Headquarters, and Denver’s 16th Street Mall.[3]