Font makers and anyone looking for a full alphabet of images might find this set from the famous engraver Albrecht Dürer 1471-1528) useful. Vintage fancy letter set from the 1500s. This Albrecht Dürer Alphabet includes the letters of the alphabet commonly used at that time in history. It’s missing a pair of letters, one lowercase and one uppercase letter but hopefully you can simply work around that. It is from the 1535 publication Of the Just Shaping of Letters.
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.