I have uploaded a new version of my book ‘Form & Number: A History of Mathematical Beauty’ [https://archive.org/details/cain_formandnumber_ebook_large] to archive.org.
The PDF of the new version is available immediately, and archive.org will re-generate the pages for the in-browser reader over the next few hours.
Changes:
• Improvements to several figures.
• Various small improvements to the text.
• Several minor corrections, including a number of reader-submitted ones.
• All end-of-line word hyphenations now follow the Oxford University Press standard. (The TeX/LaTeX #hyphenation algorithm does a good job, but is not perfect.)
• Many previously-bad page breaks have been adjusted.

Form & Number: A History of Mathematical Beauty (Ebook, large format) : Alan J. Cain : Free Download, Borrow, and Streaming : Internet Archive
This book offers a history of beauty in mathematics and of the study of beauty in mathematics. Its intention is to examine the historical development of the...