1. Citta-Mandala (Symbol or Thought Mandala) Bookmark Citta-Mandala (Symbol or Thought Mandala), accession number 2006.30. Search result 1 Artist: Unknown (Unknown) Classification: Textile Materials: Thangka: colors on cotton Dimensions: 16 1/3 x 11 1/2 image in. Accession Number: 2006.30