From a young age, Dodgson wrote poetry and short stories, both contributing heavily to the family magazine Mischmasch and later sending them to various magazines, enjoying moderate success. Between 1854 and 1856, his work appeared in the national publications, The Comic Times and The Train, as well as smaller magazines like the Whitby Gazette and the Oxford Critic. Most of this output was humorous, sometimes satirical, but his standards and ambitions were exacting. "I do not think I have yet written anything worthy of real publication (in which I do not include the Whitby Gazette or the Oxonian Advertiser), but I do not despair of doing so some day," he wrote in July 1855. Sometime after 1850, he did write puppet plays for his siblings' entertainment, of which one has survived, La Guida di Bragia.
In 1856 he published his first piece of work under the name that would make him famous. A romantic poem called "Solitude" appeared in The Train under the authorship of "Lewis Carroll." This pseudonym was a play on his real name; Lewis was the anglicised form of Ludovicus, which was the Latin for Lutwidge, and Carroll an Irish surname similar to the Latin name Carolus, from which the name Charles comes.
In the same year, 1856, a new Dean, Henry Liddell, arrived at Christ Church, bringing with him his young family, all of whom would figure largely in Dodgson's life and, over the following years, greatly influence his writing career. Dodgson became close friends with Liddell's wife, Lorina, and their children, particularly the three sisters: Lorina, Edith and Alice Liddell. He was for many years widely assumed to have derived his own "Alice" from Alice Liddell. This was given some apparent substance by the fact the acrostic poem at the end of Through the Looking Glass spells out her name, and that there are many superficial references to her hidden in the text of both books. It has been pointed out that Dodgson himself repeatedly denied in later life that his "little heroine" was based on any real child, and frequently dedicated his works to girls of his acquaintance, adding their names in acrostic poems at the beginning of the text. Gertrude Chataway's name appears in this form at the beginning of The Hunting of the Snark, and no one has ever suggested this means any of the characters in the narrative are based on her.
Though information is scarce (Dodgson's diaries for the years 1858–1862 are missing), it does seem clear that his friendship with the Liddell family was an important part of his life in the late 1850s, and he grew into the habit of taking the children (first the boy, Harry, and later the three girls) on rowing trips accompanied by an adult friend to nearby Nuneham Courtenay or Godstow.
It was on one such expedition, on 4 July 1862, that Dodgson invented the outline of the story that eventually became his first and largest commercial success. Having told the story and been begged by Alice Liddell to write it down, Dodgson eventually (after much delay) presented her with a handwritten, illustrated manuscript entitled Alice's Adventures Under Ground in November 1864.
Before this, the family of friend and mentor George MacDonald read Dodgson's incomplete manuscript, and the enthusiasm of the MacDonald children encouraged Dodgson to seek publication. In 1863, he had taken the unfinished manuscript to Macmillan the publisher, who liked it immediately. After the possible alternative titles Alice Among the Fairies and Alice's Golden Hour were rejected, the work was finally published as Alice's Adventures in Wonderland in 1865 under the Lewis Carroll pen-name, which Dodgson had first used some nine years earlier. The illustrations this time were by Sir John Tenniel; Dodgson evidently thought that a published book would need the skills of a professional artist.
The overwhelming commercial success of the first Alice book changed Dodgson's life in many ways. The fame of his alter ego "Lewis Carroll" soon spread around the world. He was inundated with fan mail and with sometimes unwanted attention. Indeed, according to one popular story, Queen Victoria herself enjoyed Alice In Wonderland so much that she suggested he dedicate his next book to her, and was accordingly presented with his next work, a scholarly mathematical volume entitled An Elementary Treatise on Determinants. Dodgson vehemently denies this story, commenting "...It is utterly false in every particular: nothing even resembling it has occurred"; and it is unlikely for other reasons: as T.B. Strong comments in a Times article, "It would have been clean contrary to all his practice to identify [the] author of Alice with the author of his mathematical works". He also began earning quite substantial sums of money but continued with his seemingly disliked post at Christ Church.
Late in 1871, a sequel — Through the Looking-Glass And What Alice Found There — was published. (The title page of the first edition erroneously gives "1872" as the date of publication.) Its somewhat darker mood possibly reflects the changes in Dodgson's life. His father had recently died (1868), plunging him into a depression that lasted some years.
The Hunting of the Snark:
In 1876, Dodgson produced his last great work, The Hunting of the Snark, a fantastical "nonsense" poem, exploring the adventures of a bizarre crew of tradesmen, and one beaver, who set off to find the eponymous creature. The painter Dante Gabriel Rossetti reputedly became convinced the poem was about him.
In 1856, Dodgson took up the new art form of photography, first under the influence of his uncle Skeffington Lutwidge, and later his Oxford friend Reginald Southey. He soon excelled at the art and became a well-known gentleman-photographer, and he seems even to have toyed with the idea of making a living out of it in his very early years.
A recent study by Roger Taylor and Edward Wakeling exhaustively lists every surviving print, and Taylor calculates that just over fifty percent of his surviving work depicts young girls, though this may be a highly distorted figure as approximately 60% of his original photographic portfolio is now missing, so any firm conclusions are difficult. Dodgson also made many studies of men, women, male children and landscapes; his subjects also include skeletons, dolls, dogs, statues and paintings, and trees. His studies of nude children were long presumed lost, but six have since surfaced, five of which have been published and are available online. His pictures of children were taken with a parent in attendance and many of the pictures were taken in the Liddell garden, because natural sunlight was required for good exposures.
He also found photography to be a useful entrée into higher social circles. During the most productive part of his career, he made portraits of notable sitters such as John Everett Millais, Ellen Terry, Dante Gabriel Rossetti, Julia Margaret Cameron, Michael Faraday and Alfred, Lord Tennyson.
Dodgson abruptly ceased photography in 1880. Over 24 years, he had completely mastered the medium, set up his own studio on the roof of Tom Quad, and created around 3,000 images. Fewer than 1,000 have survived time and deliberate destruction. He reported that he stopped taking photographs because keeping his studio working was difficult (he used the wet collodion process) and commercial photographers (who started using the dry plate process in the 1870s) took pictures more quickly.
With the advent of Modernism, tastes changed, and his photography was forgotten from around 1920 until the 1960s.
To promote letter writing, Dodgson invented The Wonderland Postage-Stamp Case in 1889. This was a cloth-backed folder with twelve slots, two marked for inserting the then most commonly used penny stamp, and one each for the other current denominations to one shilling. The folder was then put into a slip case decorated with a picture of Alice on the front and the Cheshire Cat on the back. All could be conveniently carried in a pocket or purse. When issued it also included a copy of Carroll's pamphletted lecture, Eight or Nine Wise Words About Letter-Writing.
Another invention is a writing tablet called the nyctograph for use at night that allowed for note-taking in the dark; thus eliminating the trouble of getting out of bed and striking a light when one wakes with an idea. The device consisted of a gridded card with sixteen squares and system of symbols representing an alphabet of Dodgson's design, using letter shapes similar to the Graffiti writing system on a Palm device.
Among the games he devised outside of logic there are a number of word games, including an early version of what today is known as Scrabble. He also appears to have invented, or at least certainly popularised, the Word Ladder (or "doublet" as it was known at first); a form of brain-teaser that is still popular today: the game of changing one word into another by altering one letter at a time, each successive change always resulting in a genuine word. For instance, CAT is transformed into DOG by the following steps: CAT, COT, DOT, DOG.
Other items include a rule for finding the day of the week for any date; a means for justifying right margins on a typewriter; a steering device for a velociam (a type of tricycle); new systems of parliamentary representation; more nearly fair elimination rules for tennis tournaments; a new sort of postal money order; rules for reckoning postage; rules for a win in betting; rules for dividing a number by various divisors; a cardboard scale for the college common room he worked in later in life, which, held next to a glass, ensured the right amount of liqueur for the price paid; a double-sided adhesive strip for things like the fastening of envelopes or mounting things in books; a device for helping a bedridden invalid to read from a book placed sideways; and at least two ciphers for cryptography.