Inscription
lower left in graphite: 14/50; lower right in graphite: How
Provenance
Experimental Printmaking Institute, Easton, Pennsylvania; acquired 2008 by the National Gallery of Art
![How Time Flies [left sheet]](https://media.nga.gov/iiif/f95a3ef4-e6f8-4e92-8241-dd49f73fdb0b/full/!588,600/0/default.jpg)
lower left in graphite: 14/50; lower right in graphite: How
Experimental Printmaking Institute, Easton, Pennsylvania; acquired 2008 by the National Gallery of Art
![Hidden Hand [print]](https://media.nga.gov/iiif/cbfe2459-417a-4bb7-aac1-b807e369241d/full/!100,100/0/default.jpg)
![Hidden Hand [instructional folder]](https://media.nga.gov/iiif/a6b0f491-60da-47e9-96cc-bb0d781f3641/full/!100,100/0/default.jpg)
![How Time Flies [right sheet]](https://media.nga.gov/iiif/78c51be6-8f5d-4720-923a-eb166a9ccbe8/full/!100,100/0/default.jpg)