Miss Leavitt's Stars
p. 14. The second sentence of the second paragraph after the section break should say that a fifth magnitude star is 100 times dimmer than one of zero (not the first) magnitude.
p. 17. The last sentence of the second paragraph should refer to the Pleiades as a cluster rather than a constellation.
p. 24. There is a typo in the caption: Swann should be Swan.
p. 77. Another typo in a caption: Herber should be Heber.
p. 101. The final sentence of the first full paragraph, should, of course, say millions of years not millions of light-years.