- Please keep these annotations SPOILER-FREE by not revealing information from later pages in the novel.
Page numbers refer to editions with 369 pages, where the story begins on page 1. Not sure if there are other editions with variant pagination. Please let us know otherwise.
Ginger . . . Skipper . . . Gilligan . . . Thurston Howell III . . . Lovey
All characters from the TV show Gilligan's Island. See below for more references to this iconic show.
The largest city and capital of the US Virgina Islands.
A spelling error. Should be "Arnold." He was, as the narrator explains, a nineteenth century educator and writer. Joseph Arnould wrote Law of Marine Insurance (1848).
Another reference to Gilligan's Island. "L'il buddy" was the captain's nickname for Gilligan.
This name is likely derived from a 1910 noir-ish murder-mystery novel Paternoster Ruby by Charles Edmonds Walk. Alexander Stilwell Burke and Stodger, a plain-clothes cop, are two main characters. Google Books Perhaps Pynchon's slyly recycling here some unused stuff from his vast research for Against the Day? A excerpt from Walk's novel:
- "Nasty case," Stodger was imparting, in queer staccato sentences. "Shouldn't have much difficulty, though; responsibility lies between two men. Here all last night. Nobody else. Callahan and O'Brien holdin' 'em. One 's Page's private secretary; fellow named Burke Alexander Stilwell Burke. Peach of a monicker, ain't it? Has all three sections on his cards.
- Suddenly she snuggled closer and clasped her hands tightly upon my shoulder. Her hair teased my cheek, and the delicate perfume of it made me light-headed. Twisting her pretty head sideways, she flashed an arch look at me from under her lashes, then glanced quickly away again. Blue eyes and long dark lashes are a potently disturbing combination.
- "Well," she sighed, "the Page case may have cost you a fortune, but it gave you me. And I for one am very content and happy, Mr. Swift."
a three-hour tour
Yet another reference to Gilligan's Island. This is a quote from the theme song.
Krazy Kat was a popular comic strip that run in newspapers from 1913 to 1944. Ignatz and Offisa Pupp are characters.
"Why not get a houseboat up in the Sacramento Delta--smoke, drink, fish, fuck..."
It's tough not to see this as a nod to Doc's brother shamus Travis McGee (fellow detective, not Irish monk,) the creation of Florida writer John D. MacDonald. McGee lives on a houseboat, taking his "retirement in installments," drinking, lounging on Florida beaches, meeting and inevitably helping beautiful women out of troubles that almost always involve a sinister land broker or two. Along the way Trav usually ends up pontificating about rapacious land developers, the increasingly artificial and isolated American lifestyle, and people's loss of connection with the natural world. 
This is a surfing/skateboarding term for someone who rides left-footed. So-called regular foot riders keep their left foot at the front of the board, but goofyfoot riders put their right foot at the front. More here.
a surfer or two who'd found and ridden other breaks [...] unphotographed and unrecorded
Even though Pynchon's reference to Mavericks would seem an anachronism, as no one other than a couple surfers had even tried Mavericks until Jeff Clark began riding the gigantic break in 1975, alone, until 1990 when he convinced some other surfers to check it out, this description would seem to fit Jeff Clark perfectly, discovering and surfing, alone, some of the largest waves on the planet. Jeff Clark Wikipedia entry...