Sort of, it's pretty shaky and I really have very little concrete evidence to back it up other than the knowledge base built up from seeing the guitars and shreds of info over the last several yearss:
Late 1960's: B&J Music of New York, NY starts importing instruments from Japanese manufacturers under their white-label "El Degas" for sale in North America. Limited models (unknown exactly which were offered in this period). MIJ (Made in Japan), likely from several different manufacturers.
1970's: Peak period with models including copies of Gibson, Guild, Martin (acoustics) and Fender, Gibson, Rickenbacker, along with the Ibanez Artist-style (we sometimes attribute as an Alembic copy) (electrics). Also found are generic classical acoustics, mandolins, banjos, ukeleles. MIJ (Made in Japan), likely from several different manufacturers. It's all done in "eras" rather than years, as there seem to be no surviving records to pinpoint even exact years of major shifts or events.
[note: discerning a late 60's El Degas from a 1970's is pretty difficult and would be pure hearsay; we can notice certain traits that may point to the early days but it is not able to be proven when they were manufactured]
Very late 1970's or early 1980's: B&J Music bought out by Kaman Music of Ontario; production moves to Korea (these two events likely coincide but that cannot be proven); models include copies of Fender (you see more 'modern' 80's style HHS Strats & "Superstrats"), RIckenbackers, Gibsons (electrics) and Gibson, Martin, Guild (acoustics). Also found are generic classical acoustics, mandolins, banjos, ukeleles. MIK (Made in Korea), likely from several manufacturers.
[MIK models normally sport a different logo style and headstock design than those on the earlier MIJ models]
Sometime in the 80's production ended on El Degas guitars and B&J was primarily just the distribution arm of Kaman Music.
Sometime later (unknown date): B&J bought by Fender and brought into the Fender of America family of brands.
In 2015 it was acquired by JAM Music.
Here's a link to the NAMM site which has great interviews with people involved in B&J
https://ww1.namm.org/category/tags/b-j-music