Edward Charles Pickering
![Pickering in the 1880s](https://upload.wikimedia.org/wikipedia/commons/5/5d/Edward_Charles_Pickering_1880s.jpg)
21
Published: 1890
Superior document: Annals of the Astronomical Observatory of Harvard College 24
22
23
Published: 1890
Superior document: Discussion of observations made with the meridian photometer during the years 1882 to 1888 1
24
Published: 1899
Superior document: Discussion of observations made with the meridian photometer during the years 1882 to 1888 2
25
26
Published: 1918
Superior document: The Henry Draper Catalogue
27
Published: 1919
Superior document: The Henry Draper Catalogue
28
Published: 1922
Superior document: The Henry Draper Catalogue
29
Published: 1921
Superior document: The Henry Draper Catalogue
30
Published: 1924
Superior document: The Henry Draper Catalogue
31
Published: 1923
Superior document: The Henry Draper Catalogue
32
Published: 1918
Superior document: The Henry Draper Catalogue
33
Superior document: Annals of the Astronomical Observatory of Harvard College ...
34
Published: 1907
Superior document: Annals of the astronomical observatory of Harvard College 47,1
35
Published: 1913
Superior document: Annals of the astronomical observatory of Harvard College 75,2
36
Published: 1908
Superior document: Annals of the Astronomical Observatory of Harvard College 54
37
Published: 1908
Superior document: Annals of the Astronomical Observatory of Harvard College 50
38
Published: 1917
Superior document: Annals of the Astronomical Observatory of Harvard College 71
39
Published: 1912
Superior document: Annals of the Astronomical Observatory of Harvard College 56
40
Published: 1913
Superior document: Annals of the Astronomical Observatory of Harvard College 72