William Henry Pickering
![Pickering in 1909](https://upload.wikimedia.org/wikipedia/commons/2/2a/Pickering_William_Henry_02598v.jpg)
1
Published: 1909
Superior document: Annals of the astronomical observatory of Harvard College 61,2
2
Published: 1895
Superior document: Annals of the Astronomical Observatory of Harvard College 32,1
3
Published: 1900
Superior document: Annals of the Astronomical Observatory of Harvard College 32,2
4
Published: 1908
Superior document: Annals of the astronomical observatory of Harvard College 61,1
5
Published: 1903
Superior document: Annals of the Astronomical Observatory of Harvard College 51
6
Published: 1911
Superior document: Annals of the astronomical observatory of Harvard College 61,3