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Titles
- The modern phorometer, including the phorometer-trial frame, phoro-optometer, and the rotary cross-cylinder1
- The parallax test for heterophoria1
- [A branch of a cherry tree and a bee]1
- [A crow with a paper hat]1
- [A crowing rooster]1
- [A cube]1
- [A dot in a magnifying glass]1
- [A duckling and a spider]1
- [A frog jumping through a hoop]1
- [A hammer and pliers]1
- [A shield with a bear]1
- [A snowman and a broom]1
- [A woman eating a piece of candy]1
- [An Easter bunny and a nest of eggs]1
- [An umbrella shade and a stick]1
- [Moon and stars]1
- [Two men playing maracas]1