Could the inks used in Wonder Bread container have caused lead poisoning?

Decades ago I recall reading that the colorful wrapper of Wonder Bread was misprinted inside out and therefore the printed logo rubbed off on the bread itself, bread was used and kids ended up with lead poisoning. I do remember reading this but can find no further information. Is this story plausible? If so, would not some lead exposure have happened even with correctly printed packaging since it would have been touched by those taking the bread from the packaging.


