Why yes, I have been buying up out of print Issac Asimov non-fiction books on Amazon. How could you tell? ;-)
This was an odd little book! Asimov is quite open that he hasn't chosen the poems based on their quality and even admits to not liking several of them. The selection of poems is heavily weighted towards depictions of historical events that were broadly familiar to audiences at some point. I'll be honest that I only knew about 1/3rd of them but I'm nobody's idea of poetry expert which is why I picked this up in the first place. Asimov then footnotes the poems adding the historical background or other info that helps you understand what is going on in the poem. The poems are arranged in chronological order based on the events depicted starting with Shelley's Ozymandias and ending shortly after WWI (In Flander's Field). Good stuff.
It's hard to read this and not be at least a little surprised at how impenetrable the references are to a modern, and if I may be bold, reasonably well educated person. When education was revamped to de-emphasize the canon, dead white guys, etc, it basically renders this part of our cultural heritage incomprehensible. I was surprised by how much I didn't understand without Asimov's annotation and these were once well known verses (not just for an elite).