From: "Collection of Voluntaries for Organ or Harpsichord, composed by Dr. Green, Mr. Travers and several other eminent Masters." London 1765 (see IMSLP)
Full organ with mixtures and Sesquialteras but no Trumpet or 16'.
Two parts: 1) Spiritoso (Ouverture or march style)
2) Allegro, Fugue style