There has in the past been confusion as to how long Harry Brooker lived, with some sources indicating that he had passed away before some of his paintings has been painted. Also some of the signatures on Harry Brooker's paintings perhaps indicate that they have been incorrectly attributed to Harry Brooker.
The following authorative reference work, references 4 painters with the BROOKER surname
The following snipet was found on the internet. It appears to be from a much older dictinary of artists.