Jerome K. Jerome 
Three Men on the Bummel 

Three Men on the Bummel (also known as Three Men on Wheels) is a humorous novel by Jerome K. Jerome. It was published in 1900, eleven years after his most famous work, Three Men in a Boat (To Say Nothing of the Dog). The sequel brings back the three companions who figured in Three Men in a Boat, this time on a bicycle tour through the German Black Forest. ( Wikipedia)