Copy letter from Robert William Frederick Harrison, to Messrs Johnson & Phillips Mr Cameron, the Royal Society's electrician, has sent on their bill for £1-15-0 for repairs to the Arc Lamp for the lantern, and Harrison thinks this is excessive. Has been informed on good authority that the repairs required were not very extensive. Notes that they are being charged for a 'special' messenger, when all that was special about the messenger was his carelessness. He took a much needed lamp, first to the Royal Institution, and instead of bringing it to the right address, took it all the way to Kilburn to Cameron. 22 December 1904