This series contains the slides made by Lambert. The slides are from all over the United States, Mexico and Canada. Many were taken in Utah and the West. They contain photos of landscapes, mountains, rivers, lakes, geological formations, and rarely people. They are arranged alphabetically by county and state. They are listed with the first county and state in the box and the last county and state in the box. Other states in each box are also listed. Each slide is numbered on the slide, starting over again for each county. The first slide for each county is usually the county courthouse for that county.