harvard-art-museums-calligraphy:

The Lotus (Chinese Arabic), Harvard Art Museums: Calligraphy

Harvard Art Museums/Arthur M. Sackler Museum, Loan from Harvard-Yenching Library
Size: 79 x 55 cm (31 1/8 x 21 5/8 in.)

https://www.harvardartmuseums.org/collections/object/58157