Guides
Short, practical write-ups on placing old imagery on a map.
How to georeference an image
What the job involves, what you need, and the steps from a plain image to a file QGIS can open.
How to find where an old photo was taken
Ways to narrow down a location, and what to do when there is no GPS tag.
World files and QGIS
What a world file contains and how to open a georeferenced image in QGIS.
More guides are planned: working with CORONA frames, choosing a reference image, and reading the match report.