The basic textbook employed by the Defense Institute of Security Cooperation Studies (DISCS - formerly DISAM) for instruction of all classes covering the full range of security cooperation activities. The text is revised annually and commonly referred to as the Green Book as it is bound in a green cover.
7938 Passenger Train is a City Trains set released in June 2010. It was sold in the US as a Special Edition set at the LEGO Store and Toys R Us.
1964 was the first time that instruction manuals were included in LEGO sets. One of the LEGO Group's most successful series, the LEGO train system, was first released in 1966. The original train sets included a 4.5-volt motor and rails; two years later, a 12-volt motor was introduced.