William Herschel discovered NGC 1907 = H VII-39 = h354 on 17 Jan 1787 (sweep 693) and noted "a pretty compressed cluster of small stars, near 4' diameter." John Herschel made three observations and reported on 5 Jan 1827 (42), "p Rich; irreg R; stars 9...12m, 50 or 60 counted; bM."

200/250mm - 8" (11/5/83): rich, glowing cluster, compact, includes two bright stars to the south.

300/350mm - 13.1" (11/5/83): dense, about three dozen stars.

400/500mm - 17.5" (10/12/85): 50 stars in a 7' diameter. Includes a few bright stars but very rich in fainter stars in the central region. A wide pair of mag 9.5-10 stars is at the south end (9.6/9.9 at 52") and a closer pair is off the NE side (h699 = 10.4/11.6 at 10"). Located 33' SSW of M38.

Notes by Steve Gottlieb