Longfellow notwithstanding, precious few of us leave footprints in the sands of time. Even today, while our names will probably remain, buried in such things as old phone books and Social Security records, most of us will be utterly and forever forgotten within a generation or two of our deaths. Like it or not, only the great and the infamous are remembered.
Every now and then, however, an ordinary person somehow slips by the bouncer outside the nightclub of immortality and joins his betters inside. Perhaps my favorites in this category are A, B, C, D, and E. They were the typesetters who set the First Folio of Shakespeare, printed in 1623. In the centuries since, scholars have pored over each page of it with such intensity that they have discerned their existence and were able to determine which of the five set which page by their characteristic spellings and typos.