As some of my readers have surmised, I developed a lifelong interest in the chemical industry. I started collecting chemical and petroleum/energy related stamps many years ago, joining a large contingent of collectors with a similar interest. At some point I bought the book illustrated above, which is absolutely magnificent. It illustrates many hundreds of topical stamps from countries all over the world with annotations. A wonderful way to reflect on chemical history in color.
Unfortunately, the book has become very expensive as it costs around $ 400 in hardcover from Amazon. However, many copies were probably sold to libraries and you might find it there as a great reference book. It would also make a wonderful gift as a coffee table book for a retired family member who spent his career the chemical industry.
Happy New Year!