Rare Book Shop Near Me for Vintage Pulp in San Francisco: Kayo Books

Kayo Books is the rare book shop near me answer for anyone who collects paperbacks with painted covers, crime digests and the cheap, gaudy print culture that serious antiquarian dealers once ignored. The shop sits at 907 Post Street on the edge of Lower Nob Hill, but it does not keep regular walk-in hours. In the owners' own words it is open by appointment or happenstance. If someone is there, the shop is open, and you knock or ring the bell. To be sure of getting in, email or call ahead.

Kayo is run by Ron Blum and Maria Mendoza, a married couple who sign the shop's About page simply as Ron and Maria. Their site says Kayo has been open to the public since 1996, and a 2025 profile in the SF Gazetteer notes that they started in a smaller space on Polk Street before spending nearly three decades on Post Street. In 2022 they published their first book under the Kayo imprint, The Best of Dancer, a sign that the shop is a publisher and archive as much as a store.

In 2016 Hoodline reported that Kayo had signed a new seven-year lease and was shifting to online and appointment sales. That model stuck. After 28 years at 814 Post Street, the shop moved a short way down the block in late 2023 and opened its new room at 907 Post Street with an open house during the First Thursday art walk in January 2024. The address changed, but the policy did not. Kayo is a two-person operation, so the bell, the email and the phone are how you get inside.

Mention specific authors, publishers or genres, since the owners can pull material from the stacks before you arrive. If you happen to be walking down Post Street, try the bell anyway. When the lights are on and someone answers, you are in. Do not expect a posted schedule on the door. Collectors chasing a single series should bring a numbered list of the issues they already own, which saves everyone from pulling duplicates off a crowded shelf.

The About page reads like a map of twentieth-century pop print: vintage paperbacks, pulps, cartoons, comics and comix, vintage magazines, music flyers and memorabilia, records and counterculture material. There are also gay and lesbian pulps, movie memorabilia, vintage erotica and original illustration and comic artwork. Time Out once summed up the core stock as paperbacks and dime-store novels from the 1940s to the 1970s. Expect to see hard-boiled crime, juvenile delinquent novels, science fiction digests and racks of nurse romances side by side.

The SF Gazetteer described racks of nurse paperbacks and 1920s issues of Amazing Stories, the first magazine devoted entirely to science fiction, and that pairing shows the range. Ask to see the gay and lesbian pulps, which are now studied as social history as well as collected for their covers. Ask, too, about original cover art and comic pages. Kayo's specialty is the cover painters, cartoonists and small publishers who were never meant to last, which is exactly why surviving copies in good condition are so prized.

The Gazetteer called the new shop a beautiful, renovated space with a mezzanine and a basement behind a smoked-glass threshold, very full yet airy. Shelves are packed to the top, with paperbacks shelved spine out by genre and the more striking covers faced out. The Gazetteer's 2025 visit also met the shop dog, Pip, a black dog with white in her muzzle, so mention any allergy when you book. Bring reading glasses if you need them, because many spines are printed in tiny type.

Mid-century paperbacks are fragile. The glue in their spines dries out and the pulp paper yellows and cracks, so never open one flat or bend the covers back. Pull a book by the middle of the spine rather than the top edge, and keep any plastic sleeve on while you look. Ask before photographing covers or artwork. Keep food and drinks outside and set bags on the floor away from the low shelves. Because you are visiting by arrangement, keep to the time you agreed.

907 Post Street is just west of Hyde Street, in the blocks locals call the Tendernob, where Lower Nob Hill meets the Tenderloin. After your visit, walk two blocks west to Polk Street for its long run of bars, cafes and small shops, the same corridor where Kayo first opened. Heading east on Post takes you toward Union Square, about a fifteen-minute walk downhill. Muni's 38 Geary buses run one block south on Geary Street if you would rather ride.

Kayo rewards collectors with a want list, cover-art fans, crime and science fiction readers, film and music people looking for ephemera, and researchers studying queer publishing history. Gift hunters do well too, because a striking vintage paperback makes a cheap, memorable present. It is not the place for a spontaneous family drop-in or for someone hunting leather-bound antiquarian folios. If you want a general secondhand bookstore that is always open, pick another San Francisco shop and save Kayo for a planned visit.

Kayo Books is at 907 Post Street, San Francisco, CA 94109, in Lower Nob Hill. The shop is open by appointment or happenstance and keeps no regular walk-in hours. Mention allergies when booking, since a shop dog has been part of the visit, and handle the fragile stock gently. Street parking is tight, so Muni's Geary buses are the easier option. Ask Karpo in the Karpo APP to pair your Kayo appointment with dinner on Polk Street.