Which company published Lowney's Cook Book, containing the 1907 Lowney's Brownies recipe?

The company that published Lowney’s Cook Book was the Walter M. Lowney Company.

The book included a 1907 recipe for Lowney’s Brownies, an important early example in the development of the recognizable chocolate brownie. It was associated with Maria Willet Howard, who had trained under Fannie Farmer and adapted the Boston Cooking School tradition for the Lowney publication.

The Walter M. Lowney Company was a Boston chocolate and candy business founded by Walter M. Lowney in the early 1880s. Its chocolate products helped connect commercial confectionery with recipe publishing, and Lowney’s Cook Book presented recipes using the company’s products. The 1907 brownie recipe was an adaptation of a Boston Cooking School recipe for a “Bangor Brownie”; it added an extra egg and another square of chocolate, producing a richer, fudgier result.

This question can cause several mix-ups. Baker Chocolate Company was another historic American chocolate maker, but it was not the publisher named in the reference. General Foods was a much later corporate name, and Little, Brown and Company was a book publisher unrelated to this cookbook’s issuing company. The Walter M. Lowney Company is therefore the specific canonical answer.