The website for Trees of Antiquity, a California nursery, includes photos and short descriptions of 155 heirloom apple varieties, from Akane to Yellow Transparent.
The terse descriptions include occasional flights of fancy: "The raised russetting resembles tiny daggers linked with a fine mesh," for Blue Pearmain.
Descriptions also include such useful information as recommended USDA zone, flowering and ripening times, size, and storage quality.
A complicated search engine promises to help you find the right tree for your orchard or garden, but seems not to work at all.
A nursery sells trees, not fruit, and the bare-root season lasts from January through April. But it makes for a fun browse any time of year.