"Longitude" was first a great book by Dava Sobel.
Published in 1995 with an Introduction by Neil Armstrong. Armstrong's Introduction is well worth reading, as an astronaut he fully understood the extreme importance of position calculation when travelling through the void..
John Harrison ultimately received £20,000 - or about $3,000,000 current dollars, from the English Crown for his creation and fabrication of reliable marine chronometers which let English naval vessels determine their longitude ( East West positioning at sea ) to a rough accuracy of about 5 miles. This was very important because whole flotillas of English Naval Vessels had literally sailed onto the rocks due to their inability to determine longitude. Harrison's invention was life saving for sailors at sea.
You can see one of Harrison's chronometers today in Greenwich England. What a priviledge.
I photographed one when I visited Greenwich in September of 2011, on my way to Kenya for safari
Dava Sobel is a female author who has writen several interesting books revolving around science or science history. Wikipedia says she is also a chaser of solar eclipses, having seen 8 by August 2012. I don't know if she was watching the one I watched in Glendo Wyoming on August 21, 2017