The history info would be great; the people, places, and even the politics of brewing's foundations.
How about some comparative analysis? There are so many grain choices, with more showing up all the time (including a lot of organic malt). The same for yeasts. So why not a recipe per month where two grains and two yeasts are compared? They could be two 10 gallon batches so that the four combinations could be tried. I know it'd be a hardship to find volunteers to help rate and dispose of all that beer, but perhaps you could manage!