This image was used by the author Henry R. Plomer in his 1900 tome A Short History of English Printing. A grand drop cap M that could be just the thing you are looking for. This image is copyright free in the United States, making it perfect for your next arts and crafts or webpage project.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.