July 1 Monday – Sam and others returned from Tangier to re-board the QC for a 6 PM departure. 

June 30 Sunday – Sam and seven others, including Dan Slote, boarded a steamer to Tangier. THIS is royal! Let those who went up through Spain make the best of it—these dominions of the Emperor of Morocco suit our little party well enough. We have had enough of Spain at Gibraltar for the present. Tangier is the spot we have been longing for all the time. Elsewhere we have found foreign-looking things and foreign-looking people, but always with things and people intermixed that we were familiar with before, and so the novelty of the situation lost a deal of its force.

June 29 Saturday – QC arrived at Gibraltar at 10 AM.
“In a few moments a lonely and enormous mass of rock, standing seemingly in the center of the wide strait and apparently washed on all sides by the sea, swung magnificently into view, and we needed no tedious traveled parrot to tell us it was Gibraltar. There could not be two rocks like that in one kingdom” [Innocents Abroad, Ch 7].

Sam wrote from Gibraltar to his mother and family.

June 28 Friday – From Sam’s notebook:
“Sat up all night playing dominoes in the smoking room with the purser & saw the sun rise—woke up Dan & the Dr. & called everybody else to see it.—Don’t feel very bright. “Must be 150 miles from Gibraltar yet, this morning & shall hardly have coal enough to make the port” [MTNJ 1: 348].

June 27 Thursday – The last of five letters from Hawaii, reprints of five early Sacramento Union letters with “a few minor omissions” ran in the New York Weekly. Dated Honolulu, March, 1866 and beginning “I am probably the most sensitive man in the kingdom of Hawaii…” this article “stops about half-way through the corresponding article in the Union, perhaps for consideration of space” [The Twainian, Mar. 1944 p2-3].
From Emily Severance’s notebook:

June 26 Wednesday – From Sam’s notebook: “Met a great clipper ship under a perfect cloud of canvas” [MTNJ 1: 348].

June 24 to June 27 Thursday – The New York Weekly published the last of five of Sam’s Sandwich Islands Letters. From Sam’s notebook:

“Had Ball No. 2 on promenade deck, under lanterns (no awning but heaven) but ship pitched so & dew kept deck so slippery, was little more fun than comfort about it” [MTNJ 1: 348].

June 23 Sunday – QC departed Horta at 11 AM
“The group on the pier was a rusty one—men and women, boys and girls, all ragged and barefoot, uncombed and unclean, and by instinct, education, an profession, beggars. …and never more, while we tarried in Fayal, did we get rid of them” [Innocents Abroad, Ch. 5].
Alta California printed Sam’s article “THE NUISANCE OF ADVICE,” which Sam had dated May 18 [Schmidt]. Camfield lists this as “Letter from Mark Twain” No. 18 [bibliog.].

June 22 Saturday – From Sam’s notebook:

June 21 Friday – The Quaker City (subsequently noted here as QC) arrived at Horta, island of Fayal, in the Azores at daylight.
At three o’clock on the morning of the 21 of June we were awakened and notified that the Azores islands were in sight. I said I did not take any interest in islands at three o’clock in the morning. But another persecutor came, and then another and another, and finally believing that the general enthusiasm would permit no one to slumber in peace, I got up and went sleepily on deck [Innocents Abroad, Ch 5].