London Underground carriages

what is it?

The London Underground opened in 1863 with gas-lit wooden carriages hauled by steam locomotives. The Metropolitan and District railways both used carriages exclusively until they electrified in the early 20th century. The District railway replaced all its carriages for electric multiple units, whereas the Metropolitan still used carriages on the outer suburban routes where an electric locomotive at the Baker Street end was exchanged for a steam locomotive en route.

spec sheet

built

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number built

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kind

metro

builders

Unknown builder

top speed

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power

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From the Wikipedia infobox and Wikidata. Blank means the sources don't say.