Early nebular stage of nova Cygni, 1975.

Early Observations of Algol Stars

Early observations of Algol stars

Early Observations of Nova Persei No. 2 (Ch. 1226)

Early Observations of Saturn Kilometric Radiation by Cassini

Early Observations of the Crab Nebula as a Nebula.

Early Observations of the Solar Corona

Early Observations of the South Polar Cap and Belts of Saturn

Early Operations with the International Ultraviolet Explorer.

Early Optical and Near-Infrared Photometry of the Nearby Type Ia Supernova 2002fk

Early Optical Brightening in GRB 071010B

Early Optical Observations Of GRBs With ROTSE-III

Early optical outburst of the hard X-ray transient Swift J1836.6+0341/XTE J1837+037 with Pan-STARRS 1

Early Optical Spectroscopy of SN 2011dh in M51

Early Papers on Light and Color by Thomas Melville

Early Performance and Results from the Chandra X-Ray Observatory

Early phase chemistry in Infrared Dark Clouds

Early Photelectric Photometry in Dublin and Daramona

Early Photographic Refractor

Early Photographs of the Distant Sierra Nevada Mountains Taken from Lick Observatory