With the exception of the first plate, all plates have numbers which
would indicate that they were part of a series. I am listing the plates
by series number, then by title.
| Plate Number | Plate Title/Description |
| n/a | Westcott Color Theory Slide (with booklet on suggested classroom use) |
| 1-1 | Circles of Equatorial System of Coordinates with Circle of the Ecliptic. |
| 1-2 | Circle of the Horizon System of Coordinates. |
| 1-3 | Altitude and Azimuth. |
| 1-4 | Right Ascension & Declination. |
| 2-18 | The Seasons. Path of the Earth about the Sun. |
| 4-C2 | Solar System in Perspective. |
| 4-20 | Venus - Crescent Phase. |
| 4-40 | Jupiter, Showing Markings. |
| 4-50 | Saturn, Showing Rings. |
| 5-3 | Calcium Clouds on the Sun. |
| 5-11 | Types of Eclipses. |
| 8-50 | Stellar Spectra Types. |
| 0-64 | Three Main Types of Spectra. |
| C-16 | Path of the sun among the stars, May 15 to July 14. |
| C-37 | Productions of phases of the moon. |
| C-39 | Photograph of full moon. (Harvard Obs.) |
| C-40 | Photograph of moon at 1st quarter. |
| C-75 | Circumpolar stars and key. |
| C-76 | Stars of winter and key. |
| C-77 | Stars of spring and key. |
| C-78 | Stars of summer and key. |
| C-79 | Stars of autumn and key. |
| C-85 | Great nebula in Orion. (100-in. Tel., Mt. Wilson) |
| C-88 | Great nebula in Andromeda. (Yerkes Obs.) |
| C-100 | The great globular Cluster in Hercules. (72-in., Victoria, B. C.) |