This Photograph appears
in the following Albums:
| Image ID: | 276 |
| Title: | Crucible for melting glass |
| Source: | Raymond and Mildred Pitcairn Archives, Bryn Athyn, PA |
| Date: | Unknown |
| Medium: | 35mm slide |
| Description: | The materials for each batch of glass were melted in large sandstone crucibles, one for each color of glass. |