This volume, 1st in the Yale Research Series of Boswell's journals, covers his emotionally eventful youthful travels thru German & Swiss territories, from mid-6/1764 (after law studies in Utrecht) to 1/1/1765, when he crossed the Alps for the next stages of his European tour, in Italy, Corsica & France. The volume is the Research Series parallel to Boswell on the Grand Tour: Germany & Switzerland, 1764, ed. F.A. Pottle 1953, whose annotation the editor, Marlies K. Danziger, has greatly deepened, expanded, supplemented & occasionally corrected. In keeping with the editorial policies of the Series, it restores his original spelling, punctuation, paragraphing & imperfect French). Detailed notes illuminate the contemporary political & historical context as well as a vast array of contemporary issues, concepts & personalities unfamiliar to modern readers--especially English-speakers. As well as the text of the fully-written journal, the volume includes his personal daily memoranda & his frequently revealing 'Ten Lines a Day' poems; the autobiographical 'Ebauche de ma vie' written for Rousseau, along with its various drafts, outlines & attendant correspondence; his detailed expense accounts (showing the fluctuating currencies & erratic economy of a Europe not yet formed into modern nation-states); & four maps, adapted from contemporary cartographic records, illustrating his complicated & often arduous itinerary. Boswell's European travels followed his exhilarating stay in London of 1762-63 & his mostly bleak winter in the United Provinces in 1763-64. Tho forever to be best known for his later accounts of his principal biographical subject, Samuel Johnson, Boswell has emerged since the recovery of his private papers as a compelling autobiographer, & here shows his fascination with, & abilities to record with typical liveliness & percipience, persons across a strikingly diverse social range. The European journal, which Boswell had unfulfilled hopes later in life of revising & publishing in the manner of his Corsican & Hebridean diaries, records the young Scot's quest for experience in hopes of a cosmopolitan broadening, cultural enrichment, & religious & spiritual security, & conversations culminating in his gratifying meetings with Rousseau & Voltaire. At the same time, it documents in close personal detail an unstable Europe rebuilding & restoring itself a little more than a year after the end of the 7 Years' War, a Europe whose quest for stability amid ominous political & religious fluctuation mirrors & parallels the diarist's own.