The LG series were introduced in 1942, with a starting line-up of LG-1, LG-2 and LG-3. However, LG-1 and LG-3 stopped production almost immediately after their debut, until they were re-introduced in 1945. In 1958, LG-0 was also introduced as the low-end model of the series. All these models are 14 ⅛” wide, with mahogany back and sides (except for some World War II models have maple back and sides). LG-0 and LG-1 has mahogany tops with ladder bracing except the ’42-’43 LG1, while LG-2 and LG-3 are spruce with X-bracing. LG-0 and LG-1 discontinued in 1974, LG-2 and LG-3 were replaced by B-25 and B-25N in 1962.
The LG series are narrower in the lower bout comparing to the L series, but have a much wider upper bout
During World War II, Gibson pared its flat-tops down to six standard models, the Gibson LG-1 acoustic guitar among them. As a student model, the LG-1 was introduced alongside the LG-2 and LG-3 to be a less expensive model that even younger players could afford. Because it was initially intended to be a lower-end guitar, the LG-1 uses ladder-style bracing and is made of a mahogany back with a spruce top.