Possible Clues:

• Nora begins to use alias in Birr perplexing catalogue keepers
• They know where there are stacks of Dubliners employed in a book depository
• They know where there's a stack of Bibles for those having a job stocking shelves
• Ones turning up the volume?
• Larkin and colleagues tease liars in bar
• Quiet demanders
• They shelve their responsibilities
• Reference-desk workers
• They work around stacks
• They may offer their visitors an experience of renewal