Final answer:
In the context of 1961, it is difficult to specify one individual who added antiques and paintings to make a space resemble a museum; however, influential individuals such as Philip Johnson and Arthur Houghton Jr., as well as historic art events like the Armory Show, played significant roles during this period in the art and museum world.
Step-by-step explanation:
In 1961, Philip Johnson, an influential modernist architect, added valuable antiques and famous paintings to make the main floor of his guest house, The Glass House, look like a museum. Johnson was known for his contributions to modern architecture. However, looking for the exact individual in 1961 who specifically added antiques and famous paintings is more challenging, as many collectors and influencers at the time were involved in incorporating art into spaces for a variety of reasons.
Notable figures involved with significant art contributions at that time include art patrons and collectors like the Rockefeller family and individuals such as Arthur Houghton Jr., who was affiliated with The Metropolitan Museum of Art.
Groundbreaking art exhibitions also occurred during this period, such as the Armory Show in 1913, which brought avant-garde European art to American audiences, profoundly influencing local artists and collectors. Moreover, renowned museums like The Vatican Museum and the Acropolis Museum played pivotal roles in shaping the global appreciation and conservation of art during their respective eras.