Edith May Bertels Thomas, Mary at the Farm and Book of Recipes Compiled During Her Visit Among the "Pennsylvania Germans"
“ One sheet may be filled while baking another sheetful of cakes. In this manner a large number of cakes may be baked in a short time. This baking sheet was turned the opposite way, upside down, when baking a loaf of rye bread on it, and when the loaf of bread was partly baked the extra baking sheet was slipped under the bottom of the one containing the loaf, in case the oven was quite hot, to prevent the bottom of the bread scorching. ”
