Printed Letters JNL Font Family was designed by Jeff Levine and published by Jeff Levine. Printed Letters JNL contains 1 styles and family package options. Printed Letters JNL is from stamped impressions made by a children’s sign making set by the Superior Marking Equipment Company of Chicago – circa the 1940’s. The set consisted of individually mounted rubber stamps – easy enough for happy kiddies to print signs, name plates or (unfortunately for their parents) on the walls… Limited character set.