It is a little detail, but I recently observed that the initials of this 19th German author, Albers, is not H.G. but H.C. It is H.C. Albers. The mistake comes from the title page of his book, Unterricht im Schachspiele which is written (as well as the full book) with Gothic script. There is no doubt, the C of H.C. is the same than the C. of Courierspiele.
I don't know who was the first to make that mistake, then it crawled in many places including my own books. Fortunately we can also find some sources which are correct now, like Georgi Markov's papers.
It is a little detail, but I recently observed that the initials of this 19th German author, Albers, is not H.G. but H.C. It is H.C. Albers. The mistake comes from the title page of his book, Unterricht im Schachspiele which is written (as well as the full book) with Gothic script. There is no doubt, the C of H.C. is the same than the C. of Courierspiele.
I don't know who was the first to make that mistake, then it crawled in many places including my own books. Fortunately we can also find some sources which are correct now, like Georgi Markov's papers.