It’s getting a little late in the season on the Eastern seaboard but if you’re an enthusiastic camper, you can probably find something good in Camp fires and camp cooking, or, Culinary hints for the soldier : including receipt for making bread in the “portable field oven” furnished by the Subsistence Department from 1862.
If nothing else, who doesn’t want to try packing their pack with bricks to make an “outdoor bread oven”!