While Japanese gardens are a primary source of material for the artist, the word NIWA (庭), Japanese for garden, made its first appearance in Takahashi's 1977 print titled NIWA R (Garden R) and subsequently appeared in at least 97 print titles, the last being two prints published in 1993, each titled, simply, NIWA.  Also see NIWA (Sunshine), NIWA (Movement) B2, NIWA (April) and NIWA (Winter Scenery) in this collection.