As advancements in technology made the printing process more efficient, publishers began to produce paper toys in mass quantities. In the late 19th and early 20th centuries, dolls, toy soldiers, dollhouse furniture, game boards, and play sets appeared in paper form, less expensive and more portable alternatives to their three-dimensional counterparts. Several magazines, such as "McCalls" and "Ladies Home Journal," began printing series of paper dolls with each issue. Toy makers, including McLoughlin Brothers, Milton Bradley, and Parker Brothers, produced boxed sets of paper soldiers on cardboard backings that represented troops from various American and European wars. Publishers also offered sheets of intricate furniture for children to cut out, assemble, and display in their doll houses. Typically printed using a process called chromolithography, paper toys had bright, attractive colors that appealed to children and to their parents.