21. Ayer clock tower, Lawrence, Mass. Format: Photographs Collection: Lawrence History Center Photograph Collection Date: February 8, 1990 Institution: Lawrence History Center
22. Ayer Mill Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1910–1919] Institution: Lawrence History Center
23. Ayer Mill Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1920] Institution: Lawrence History Center
24. Ayer Mill Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1860–2011] Institution: Lawrence History Center
25. Ayer Mill Format: Photographs Collection: Lawrence History Center Photograph Collection Date: March 1995 Institution: Lawrence History Center
26. Ayer Mill Format: Photographs Collection: Lawrence History Center Photograph Collection Date: 2010 Institution: Lawrence History Center
27. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
28. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
29. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
30. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
31. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
32. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
33. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
34. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
35. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
36. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
37. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
38. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
39. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center
40. Ayer Mill clock tower Format: Photographs Collection: Lawrence History Center Photograph Collection Date: [ca. 1990–1999] Institution: Lawrence History Center