No book is so reliably browseable in the Borgesian sense as the OED, because at least potentially it contains every other book. For instance, when was film first used in its cinematic sense? Meaning “a cinematographic representation of a story, drama, episode, event, etc.; a cinema performance; pl. the cinema, the ‘pictures’, the movies,” its first recorded use dates from 1905 in The Westminster Gazette: “A firm who took cinematograph films of his operations... The films once obtained have been sold and even exhibited at country fairs.” In the sense of “film-making considered as an art-form,” we jump forward to 1920. In 1925, the year of the OED documentary, we saw Buster Keaton’s Seven Chances, Chaplin’s The Gold Rush and Eisenstein’s The Battleship Potemkin.
While browsing, I decided to check on Johnsonian, in reference to James Murray’s great lexicographical precursor, and found this: “Of, belonging to, or characteristic of Dr. Samuel Johnson (1709–84), a celebrated English man of letters and lexicographer; applied esp. to a style of English abounding in words derived or made up from Latin, such as that of Dr. Johnson.” Even more gratifying was the first citation of the adjective form, dating from 1791: “The concluding line is much more Johnsonian than it was afterwards printed.” That’s Boswell, of course, in his Life. The passage concerns an early, disputed poem by Johnson, “The Winter’s Walk,” which prompts Boswell to say, “A horrour at life in general is more consonant with Johnson's habitual gloomy cast of thought.”
The third citation for Johnsonian is drawn from another admirable source, Ruskin’s Praeterita (1886): “Johnsonian symmetry and balance in sentences.” The dictionary defines the noun form simply as “a student or admirer of Dr. Johnson.” It adds what the editors label a “nonce-word,” the verb form Johnsonize, meaning “to clothe in or imbue with the style or language of Dr. Johnson.” The source is an advertisement printed in the second edition of Boswell’s Life of Johnson (1793), in Boswell’s voice: “I have Johnsonised the land; and I trust they will not only talk but think Johnson.”
For serious readers and writers, the OED is dangerous because addictive. It happily enslaved us long before the internet.