Based on September and October visits to 2021 Art Ramble, I add this fourth post, which features installations by BARD, Martha Heller, and Kiyomi Yatsuhashi. As in the three earlier posts, artist names, installation title, materials and quotes from the artists’ statements about their installations appear above my photos. Quotes and links are from The Umbrella Arts & Environment Website headed 2021 Art Ramble: Something in the Air.