Possible Clues:

• Pocket-companion, handbook
• Guide and copper shown in volume made me nervous
• Guide me through cave, mud all over the place
• Handbook used for constant reference
• This guide wants you to go with him
• Organised medevac with little hesitation, producing handbook
• To avoid losing energy, mother touring city gets guide
• Volume one edited's retracted -- keep silent about city guidebook
• Dave surprisingly took mother around European community for handy consultation in Rome
• Handbook -- copper shown in volume made me nervous