Ken Robbins

Examines the characteristics of different types of leaves and explains how and why they change colors in the autumn.

The mile gets its name from the term mille passus, which means "a thousand paces." The abbreviation for pound (lb.) comes from the Latin libra pondo. Feet, pounds, quarts, miles: these are words we use every day. But where did they originate, and what do they actually mean?

Hand-colored photographs illustrate bridges of many different types, with descriptions of their design and use.

Illustrates the life cycle of an Amaryllis.

Hand-tinted photographs and simple text re-create the fun and excitement of a day at a baseball game.

Describe in text and photographs the characteristic features of twenty different ships and boats including tugboats, submarines, trawlers, and swamp buggies.