It is considered a "prequel" to the core library of Superior Drummer, designed to add more "lovingly recorded acoustic drums" to the New York Legacy collection.
The sessions were engineered by Neil Dorfsman and Pat Thrall, capturing sounds through vintage signal chains like Neve, Pultec, and GML.
Note: As this is a paid commercial product from Toontrack, a "freedownload" is likely referring to illegal, unauthorized pirated content, which can contain viruses or malware. You can find legitimate, safe purchase and trial options directly on the Toontrack New York Studios Vol. 3 SDX product page . If you'd like, I can: