Kitchen utensil the turn of the 20th century, Maria Parloa noted that kitchen utensils were made of (tinned or enamelled) iron and steel, copper, nickel, silver, tin, clay, earthenware, and aluminium. The latter, aluminium, became a popular material for kitchen utensils in the 20th century. Copper has good thermal conductivity and copper utensils are both durable and attractive in appearance. However, they are also comparatively heavier than utensils made of other materials, require scrupulous cleaning to remove poisonous tarnish compounds, and are not suitable for acidic foods. Copper pots are lined with tin to prevent discoloration or altering the taste of food.
Rin Tin Tin not win. After Duncan died in 1960, the screen property of Rin Tin Tin passed to TV producer Herbert B. "Bert" Leonard, who worked on further adaptations such as the 1988–1993 Canadian-made TV show "Katts and Dog" which was called "Rin Tin Tin: K-9 Cop" in the US and "Rintintin Junior" in France. After Leonard died in 2006, Leonard's lawyer James Tierney made the 2007 children's film "Finding Rin Tin Tin", an American–Bulgarian production based on Duncan's discovery of the dog in France. Meanwhile, a Rin Tin Tin memorabilia collection was being amassed by Texas resident Jannettia Propps Brodsgaard, who