The pictures in this book are trichromes. A trichrome is made from three black and white photographs, taken with red, blue and green filters. These are combined to make a colour image.
Most of these trichromes were made using a Canon EOS 1n camera and Ilford FP4 film developed in Rodinal.
The cities are Birmingham and Worcester, UK.
You can see a preview and buy the book here: https://www.blurb.co.uk/b/10287122-city-and-flowers-trichromes
You can find out how to make trichromes in my podcast: https://blog.dankspangle.com/ive-been-podcasted-find-out-how-to-make-trichromes