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 (80-K), NIWA (Movement) B2, NIWA (April) and NIWA (Sunshine) in this collection.