As a means of collecting material for this book I have sent to many artists in Great Britain and in various countries of Europe, as well as in the United States, a circular, asking where their studies were made, what honors they have received, the titles of their principal works, etc. I take this opportunity to thank those who have cordially replied to my questions, many of whom have given me fuller information than I should have presumed to ask; thus assuring correctness in my statements, which newspaper and magazine notices of artists and their works sometimes fail to do.…
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