The Philosophy Book, by Gregory Bassham (2016, ISBN 978-1-4549-1847-9) Subtitle-- From the Vedas to the New Atheists, 250 Milestones in the History of Philosophy.
I really liked this book. Contains 250 one page descriptions of various philosophy topics arraigned by date. Starts with Vedas and ends with "The Triple Theory of Ethics". In the back of the book are references to other books for each topic, so you can research further. Also, of course, you can research on the internet using things like Wikipedia. Below is page one of the table of contents. As you can see a wide range of topics is covered.
Purchased from Amazon, June 19, 2019 for 19.44$