I've never seen a H.G. Hemrick but there is a G.F. Hemerick I almost ordered at Old House Gardens online last year. It's an orange dwarf single. You may want to check it out just to see if it looks anything like the pic you saw in that book. Good luck! Hope you find it.

That is the dahlia I am looking for! The names of some of the other plants featured in this book were slightly off too. I cannot wait to get this dahlia, the color is intense. Thank you very very very much, Linht. Happy New Year!