Gladys Conklin, When insect are babies, Ill. Artur Marokvia, New York, Holiday House, 1969.

They are many interesting things in the pond. Sometimes I see little tubes moving around in the shallow water. They look like sticks, but there are tiny legs moving out in front. The caddis fly lives near ponds and streams. She drop her eggs into the water. When thety hatch, each baby builds a tube of sticks or pebbles that protects its soft body.