Margetts's Longitude tables for correcting the effects of parallax and refraction, on the observed distance taken between the moon and the sun or a fixed star ... and the corresponding time at Greenwich, found by inspection.

Mode of access: Internet.

Heliometer-determinations of stellar parallax in the southern hemisphere,

"From the Memoirs of the Royal Astronomical Society, vol. XLVIII."

The U.S. Naval Astronomical Expedition to the southern hemisphere, during the years 1849-'50-'51-'52 /

Vols. 4 and 5, designed to contain the results of the astronomical observations, were not published. The material was published later by the U.S. Naval observatory in its Astronomical and meteorological observations. (Washington observations) for 1868, app. I, 1871, and Astronomical, magnetic and meteorological observations (Washington observations) for 1890, app. I, 1895.

Contributions to astronomy and geodesy, forming part of vol. xx of the Memoirs of the Royal astronomical society /

Mode of access: Internet.

A simple method of surveying from air photographs,

(Gt. Brit. Air survey committee. Professional papers, no. 8 Supplement)

Additamentum in F.G.W. Struve Mensuras micrometricas stellarum duplicium, editas anno 1837 : exhibens mensuras Dorpati annis 1837 et 1838 institutas : adjecta est disquisitio de parallaxi annua stellae [Alpha] Lyrae.

Mode of access: Internet.

Parallaxes of 260 stars derived from photographs made at the Leander McCormick observatory,

Mode of access: Internet.