||London: Longman, Lukey & Broderip, n.d. (ca.1775)
||A Pocket Book for the Guitar
||With Directions Whereby ev'ry Lady & Gentleman may become their own Tuner, To which is Added suitable to the refin'd Taste of the present Age and Entertaining Collection of Songs, Duets, Airs, Minuets, Marches, &c.
||1 or 2 citterns/English guitars, some with voice parts
Guitar in this case refers to the 18th century English Guitar, or cittern - with 6 courses rather than 6 single strings, tuned to a chord of C, also different from the modern Spanish guitar. The Renaissance cittern has another different tuning, but this has been tagged as cittern, as it is related more to that instrument than the guitar.