Because their work and their collection were both international, they were able by themselves to produce a display that was featured at the United Nations Headquarters as part of the International Year of the Child in 1979.
Так как их работа и коллекция были международными, они были сами способны устраивать показы, отмеченные United Nations Headquarters как часть Международного года ребёнка в 1979 году.