Birdwatchers at Holden Arboretum ID: 9224 | This file appears in: Holden Arboretum Enraptured birdwatchers "flock" to the Holden Arboretum shortly after its 1937 opening. | Date: 1939 | Source: © Holden Forests & Gardens Download Original File Source© Holden Forests & GardensDate1939 "Birdwatchers at Holden Arboretum" appears in: Holden Arboretum