Computational flattening algorithms have been successfully applied to X-ray microtomography scans of damaged historical documents, but have so far been limited to scrolls, books, and documents with one or two folds. The challenge tackled here is to reconstruct the intricate folds, tucks, and slits of unopened letters secured shut with “letterlocking,” a practice—systematized in this paper—which underpinned global communications security for centuries before modern envelopes. We present a fully automatic computational approach for reconstructing and virtually unfolding volumetric scans of a locked letter with complex internal folding, producing legible images of the letter’s contents and crease pattern while preserving letterlocking evidence. We demonstrate our method on four letterpackets from Renaissance Europe, reading the contents of one unopened letter for the first time. Using the results of virtual unfolding, we situate our findings within a novel letterlocking categorization chart based on our study of 250,000 historical letters.
This book presents a biography of Elizabeth Stuart, one of the most misrepresented and underestimated figures of the seventeenth century. Elizabeth Stuart, daughter of James VI and I, was married to Frederick V, Elector Palatine in 1613. The couple were crowned King and Queen of Bohemia in 1619, only to be deposed and exiled to the Dutch Republic in 1620. Elizabeth then found herself at the epicentre of the Thirty Years’ War and the Civil Wars, political and military struggles that defined seventeenth century Europe. Following her husband’s death in 1632, Elizabeth fostered a cult of widowhood and conducted a long and fierce political campaign to regain her children’s birthright. On returning to England in 1661, Elizabeth Stuart found a country whose people still considered her their ‘Queen of Hearts’. This book reveals the impact Elizabeth Stuart had on both England and Europe, demonstrating that she was more than just the grandmother of George I.
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