In Chile, Where Pablo Neruda Lived and Loved
https://www.nytimes.com/2015/12/20/travel/pablo-neruda-chile.html
This article, though intended for tourists planning a trip to Chile, tracks Neruda's life and passions through a series of his homes. Containing high-quality photographs, it's a fascinating way to access another side of the poet and to understand a bit more about the context within which he wrote.
Chile Profile—Timeline
https://www.bbc.co.uk/news/world-latin-america-19356356
This bare-bones timeline of Chilean history is a useful, though minimal, reference for readers hoping to put Neruda's biography and his political works in context.