The Academy 1880 April 10 17: 277

Bell's Life in London and Sporting Chronicle 1880 April 3 3118: 3, col. 1, section 4 Brief news item by "D.A."

Bell's Life in London and Sporting Chronicle 1880 April 10 3119: 3, col. 2 THE STAGE. (By "D.A.") News items on a forthcoming opera and Pirates

The Era 1880 January 4 42(2154): 5, col. 2 GILBERT AND SULIVAN'S NEW OPERA. Unsigned review of the Paignton production

The Era 1880 April 11 Country Edition 42(2168): 5, cols. 1-2 OPERA COMIQUE. Unsigned review of The Pirates of Penzance [appeared in Town Edition 4 April - full reference needed]

The Graphic 1880 April 10 21(541): 371, cols. 1-2 MUSIC. OPÉRA COMIQUE. [Unsigned review]

The Monthly Musical Record 1880 May 1 10: 59-60

The Musical Record 1882 November 25 217: 143, col. 3 [complete transcription follows] 
CONNECTICUT. WATERBURY. The Amphions are to present 'The Pirates of Penzance.' [signed by S.]
NEW YORK. AUBURN. We are soon to have 'The Pirates, by amateurs. [signed by E.]

The Musical Times 1880 February 1 21(444): 70 (Pirates in Paignton)

The Musical Times 1880 May 1 21(447): 230-231

The Musical World 1880 January 3 58(1): 5 Unsigned report on the Paignton performance of The Pirates of Penzance from the Daily News

The Musical World 1880 January 17 58(3): 44 Review of The Pirates of Penzance from the New York Correspondence of the Daily News

The Musical World 1880 January 24 58(4): 61, col. 2 The Pirates of Penzance (extract from a private letter, dated New York, Jan 3, 1880)

The Musical World 1880 February 14 58(7): 104 The Pirates of Penzance at Philadelphia (By Cable.)

The Musical World 1880 February 14 58(7): 105 "The Pirates of Penzance" (Extract from a private letter, dated New York, Jan. 28)

The Musical World 1880 April 10 58(15): 223 Unsigned review of The Pirates of Penzance from the Daily Telegraph

The Musical World 1880 April 10 58(15): 226 Dexter Smith's Musical Record report of a rehearsal of The Pirates of Penzance in Philadelphia

The New York Herald 1879 November 6 Triple Sheet. GILBERT AND SULLIVAN. The Builders of H.M.S. "Pinafore" Arrive in Town. FIRST MATE CELLIER. How the Famous Frigate Was Build Christened and Launched. FUTURE PLANS AND PROSPECTS. [which include Gilbert's comments on plans for the new opera - then still talking about robbers]

The Theatre 1880 February 1 New [3rd] series 1: 98 (Pirates in New York)

The Theatre 1880 April 1 New [3rd] series 1: 252 (Anecdote about the Pirates score)

The Theatre 1880 May 1 New [3rd] series 1: 305-309 Review by Clement Scott (includes illustrations on pages 305, facing page 307, and 307)

The Theatre 1880 June 1 New [3rd] series 1: 373  (report of a Gilbert witticism)

The Theatre 1880 December 1 New [3rd] series 2: 373 (report of first provincial tour)

The Theatre 1885 February 2 New [3rd] series 5: 80-82 Our Musical-Box. Review by William Beatty-Kingston of the children's production at the Savoy.