Waffles, Sandwiches, Hamburgers...
The first US waffle iron was patented in 1869. Since then various companies have manufactured waffle irons.
In the Universal Electric Housewares catalog from 1950, Landers, Frary & Clark advertised the Universal Sandwich Grill and Waffle Maker as an appliance which makes “quickie suppers or a ‘hurry up’ breakfast.” Besides making waffles and toasting sandwiches, it also fries or grills eggs, bacon, hamburgers, and fish cakes. It comes with two “quick-and-easy-to-change grids” which transform it from a waffle maker to a surface grill or vice versa. And the expansion hinge allows both small and large sandwiches, even “3-deckers,” to be toasted.
Universal Electric Housewares and other catalogs from Landers, Frary & Clark of New Britain, Connecticut can be found in the Trade Literature Collection at the National Museum of American History Library.—Alexia MacClain
Top: Landers, Frary & Clark, Universal Electric Housewares catalog, 1950Bottom: catalog assortment (photos by Liz O'Brien)

Perhaps Weismann's best known contributions to genetics were his opposition to the doctrine of the inheritance of modern traits and his germ plasm theory, which served as the forerunner to the modern day DNA theory. His observations led him to the idea that the germ cell contains "something that must be carefully preserved and passed on from one generation to another," thus birthing the theory of the germ plasm in his writings from 1886, which states that all living things contain a special hereditary substance.

