If I remember the book correctly, the short stories are themselves part of a story told by this tattooed man. Is that correct?
In this particular case, considering the arrangement of the short stories is itself within some literary device, it would be its own Work, with relationships to the short stories (“Work A is part of The Illustrated Man”).
In the case of an anthology or collection whose content is simply short stories back-to-back, it wouldn’t be a separate Work.
Instead it would be a separate Edition Group with accompanying Edition[s], with relationships to the various Works (“Edition contains Work A”, etc.)