We now know that the sightseeing bus was manufactured by the <http://en.wikipedia.org/wiki/Rapid_Motor_Vehicle_Company> Rapid Motor Vehicle Company in Pontiac MI between 1902 and 1909. We've found very similar buses in Buffalo NY, Chicago IL and even further afield in Seattle WA. The search turned up a fascinating collection of buses from that era which we have recorded at: http://www.thornburypump.co.uk/Ancestry/999_sightseeing_auto.html The date of the tour can't be earlier than 1902 and probably was not long after 1909 so this narrows down the possibilities for Rodliff/Radcliff relatives on the tour. We are trying to confirm the location. Since a photo of a Washington DC tour bus from the Oshkosh Museum has an almost identical 999 winged wheel logo and a very similar background, our best guess so far is that my relative took a tour of Washington DC. We probably now know more about the bus than we will ever know about our relative! However, it has been worth the journey if only to see what form tourism took in the US at the start of the 20th century. Once again thanks to everyone who has been able to help us. Best wishes Stan Rodliffe