In this case, Wikipedia's citation leads (via an intermediate hop) to an academic article that dates Adventure to 1975-76, and argues that a date of 1972, which

In this case, Wikipedia's citation leads (via an intermediate hop) to an academic article that dates Adventure to 1975-76, and argues that a date of 1972, which some other sources had previously mentioned, is incorrect: http://www.digitalhumanities.org/dhq/vol/001/2/000009/000009.html http://www.digitalhumanities.org/dhq/vol/001/2/000009/000009...