The general boundaries of the Forest remained unchanged until 1953.

The show remained unchanged at this point until Series 4.

After more changes it reverted to 20 hours in 1912 and was unchanged until 1932.

Class E 41 service stayed largely unchanged until the early 1990s.

This form continues unchanged until the end of the 19th century.

The route remained unchanged for nearly 20 years, until 1963.

The building then remained unchanged until its closure in 1996.

The original show remained virtually unchanged from 1971 until October 1993.

The discount rate had remained unchanged at 3 percent for nearly two years until today.

This design made them well known and remained virtually unchanged until 1986.