Cheap books can be an incredibly dangerous delight. It's one thing to walk out of the Brattle parking lot with as many $1 grabs as you can carry, but in these isolatory times, the internet makes all sorts of 'deals' only a PayPal click away. It's all a collector can do to keep within their budget. That said, my most recent Craigslist purchase, at least in terms of historical insight and uniqueness, was worth every penny: two 18th-century farmer’s almanacks, from 1795 and 1797, with much more than meteorological projections packed between and across their covers.
This past summer I had the privilege of working as an archivist intern at the National Archives in Washington DC. In between scanning, digitally-editing, and transcribing handwritten documents from the four years of Lincoln's presidency, I was allowed to pursue a personal research project with the tools and materials at Archives 1 and 2 at my disposal. With an interest in the history of conservation practices at the Archives as my starting point, my research eventually led me to focus specifically on the origins of the Archives as a organization for the safekeeping of government documents and the adoption of one particular preservation technique which didn't age well at all: cellulose acetate film lamination.