| 1. blackberry jam |
| Better Homes and Gardens Heritage of America Cookbook (1993) |
| 2. blackberry jam |
| The Fannie Farmer Cookbook by Marion Cunningham (1990) |
| 3. blackberry jam |
| Guide to Home Canning and Freezing - Ball Blue Book (1999) |
| 4. seedless blackberry jam |
| Fancy Pantry by Helen Witty (1986) |