From the introduction: This is the fourth sourcebook for Macross 2050. This book contains all of the information about all of the mecha and capital ships of the UN Military, the Zentraedi, Anti-UN forces and Varauta that have ever been used. It also has basic weapons, armor, technology and equipment for civilian or other use. A lot of the mecha and capital ships are reprinted in previous books, and are compiled in one sourcebook here. This is the compiled book of equipment and technology used in Macross. This manual does not include information from Sourcebooks 5 through 8.