In the novel, The Valley of Fear, Act 1, Scene 5, make a list of all the clues.

From the text:

We found three or four grooms and idlers standing in the drive inspecting a bicycle which had been drawn out from a clump of evergreens in which it had been concealed. It was a well used RudgeWhitworth, splashed as from a considerable journey. There was a saddlebag with spanner and oilcan, but no clue as to the owner.