<Tr> <Td> 1929 </Td> <Td> The Show of Shows </Td> <Td> Himself </Td> <Td> </Td> </Tr> <Tr> <Td> 1929 </Td> <Td> Tiger Rose </Td> <Td> Scotty </Td> <Td> </Td> </Tr> <Tr> <Td> 1930 </Td> <Td> The Lone Defender </Td> <Td> Rinty </Td> <Td> Serial </Td> </Tr> <Tr> <Td> 1930 </Td> <Td> On the Border </Td> <Td> Rinty </Td> <Td> </Td> </Tr>

Where was film star rin tin rin discovered