Michael Hemken hand carves acoustic archtop guitars, violin, violas, and bows. He was born in Minneapolis, Minnesota in 1951 but moved California in 1974, where he began repairing musical instrument for musician friends. Two years later carved his first archtop guitar and violin. Since then he has maintained a limited production of one of a kind instruments. Michael is also a master electrician.

Source: Hemken Guitars website

Guitarras Almansa was established in 1989 in Muro del Alcoy (Alicante) as a manufacturer of Classical and Flamenco guitars. They trained their workers in the Madrid style of construction with the help of local master luthiers. At first they made guitars for the European markets but soon were exporting to Asia and America as well. They offer Student, Conservatory and Concert instruments, in an attempt to respond both to the needs of beginners  and experienced players. They are located in Muro del Alcoy (Alicante) and they manufacture their classic and flamenco guitars in a whole range of scale lengths (1/2 guitars and Cadete guitars), as well as cutaway guitars equipped with preamp systems.
 

Source: Guitarras Almansa website (11 January 2022)

The Guild Guitar Company was founded in 1952 by Alfred Dronge and George Mann. Dronge was a guitarist and music-store owner and George Mann had worked as an executive with the Epiphone Guitar Company. The Guild brand name is currently owned and used by the Fender Musical Instruments Corporation.

Paul Gruen's guitars are aimed at Gypsy style jazz players looking for an alternative to the Selmer and Maccaferri style instruments. Gruen's guitars combine elements of Selmer Mac, archtop, and flattop construction, to produce a sound which has the bite and projection of Selmer Macs, coupled with more warmth and sustain. Tone is variable by inserting wooden "stoppers" into any one or two of the four oval soundholes. Gruen's guitars are available in 16", 17", and 18" lower bout widths, and in various woods. Circa 2017 Paul Gruen was not building guitars and his website was inactive.

Source: Gruen Guitars website

Kim Griffin began repairing fiddles and guitars in 1976. In 1977 he attended a course at the School of Guitar Research and Design in Vermont, taught by Charles Fox and George Morris. From then on he began making hammered dulcimers, banjos, mandolins as well as doing repairs and restorations. Currently Griffin works in a studio in Greenwich NY, building guitars of 5 basic body styles, mandolins, banjos, and hammered dulcimers.

Source Griffin website

James Goodall founded Goodall Guitars in 1972. Goodall makes a range of acoustic and classical guitars, individually built by hand. In 2004 James was joined by his son Luke in the business.

Source: Goodall Guitars website (19 July 2017)

Sven Gonstead attended the Roberto-Venn School of Luthiery after graduating from University. After Roberto-Venn, Sven was determined to make a career as an instrument maker. Sven went to work for the Santa Cruz Guitar Company.
In time, he moved home to the Midwest and started his own guitar workshop. Sven now lives in Big Bay, Michigan where he specializes in producing high quality acoustic and resophonic guitars.

Source: Gonstead guitars website (19 July 2017)

Robert Girdis grew up in Santa Clara, California. When he was in his early teens, his older brother sat him down and told him to listen to a recording of Doc Watson playing "Black Mountain Rag". It was to become a primer for Robert's musical tastes and soon he was seeking out music of other roots-based artists, which ultimately led to a desire to learn to play the guitar. His first guitar was a 12-string which as Girdis recalls "…it had impossibly high action, so I strung it with only six strings and began to learn some chords". After a few years of struggling along with this guitar, his brother found a used 000-18 in a friend's music shop, and his family presented it to him as a gift. Robert attended West Valley College in Saratoga, Ca. where he studied Psychology and Electronics.