The original caps-only design for Auroral was patented in January–March 1882 by Henry H. Thorp [USPTO D12815], owner of Cleveland TF, a subsidiary of the H.H. Thorp Manufacturing Company.
William E. Loy does not account for this face nor its derivatives. It was almost certainly cut by the master of ray shading, James West, who was associated with this TF at the time and considered Black Ray Shaded (Bruce TF 1870) his lifetime masterpiece.¹
In the 1885 catalog, Auroral was shown as caps-only along with dual-case Elberon, an unshaded version. The following year, two more dual-case derivatives were developed and advertised in The Inland Printer: Astral (a somewhat lighter version) in November, and Auroral No. 2 in January 1887. Derivative specimens display a patent notice “piggy-backing” the first one.
All commercial specimens examined include alternate letterforms for “M,” “W,” “H,” “U” and perhaps others. After ATF branches were united by Robert W. Nelson in 1895, only Elberon was shown (until at least 1900).
@jch02140 — I found the one Anna calls Auroral under the name “Reflection” in Phillips’ Old Fashioned Type Book. It shows a 24pt complete alphabet, (caps, numbers and points). There is one minor difference: your sample shows a different /M, but it likely is an alternate since the one I have shows an /N in the same style and a normal style of /M. I also found a Light version under the name “Astral“; it includes a lowercase. If you want a scan, let me know.
Please upload scans of the Phillips illustrations in case a THP Partner is inclined to digitize them. Since working specimens have commercial value, Chapel Members do not post them for public download. I have taken the liberty of opening a dropbox folder for you to handle such things. You will be automatically notified of the link via eMail.
Thanks so much for this exciting news—and for your generosity!