The letter from Harlow Shapley to Prof. M. K. Bappu telling that he will pass the kind note of indebtedness of him and his son to Mr. Campbell. It also say about his son's honor of geting special fellowship at the Mount Wilson Observatory

This letter was discussing on financial resource, disposal and acquiring equipment specifically for research on the Sun. Further he mentioned about solar telescope and high dispersion spectrograph, tower telescopes at Mt.Wilson, Potsdam Arcetri and trend of problems in solar research.

The letter is from M. K. Vainu Bappu, Nizamiah Obsevatory to Prof. Raman telling that it is best to plan on acquiring equipment specifically for research on the sun. Adding that the sun plays important role in our general understanding of Astrophysics.