Channel 7 presented an episode on "Succedio en el Peru" last night regarding the history of immigration to Peru. It has been uploaded to YouTube, so you can check it out here, https://www.youtube.com/watch?v=nMxjPZbfKtM
, though I bet if you keep your eyes out it will air again on the TV.
The focus was on internal migration, the Chinese immigration, Japanese immigration, European immigration, as a backdrop to the current influx of Venezuelans. It was really well done, so if you speak Spanish and have an hour to spare, check it out.