Wikipedia:Styletips/18

Ampersand

The ampersand (&) substitutes for the word and. In normal text, and should be used instead: January 1 and 2, not January 1 & 2. Retain ampersands in titles of works or organizations, such as The Tom & Jerry Show or AT&T. Ampersands may be used with consistency and discretion in tables, infoboxes, and similar contexts where space is limited.

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