Possible Clues:

• Reference book's style half-dreary
• Speech, lines about a lexicon
• Way of talking on a railway reference book
• Book where it is darkest before dawn
• Ordered book on CIA dirty tricks
• Perhaps the volume of Samuel's speech is to be different? Not very
• Where to find the meaning of life, for example!
• Brewer's creation, say, a tonic I mixed in without water
• Work full of meaning organised in City Road
• In a manner of speaking, half of the friary has a word for everything