Hamburg sailings

Thanks to Børge and Harald, I now have information on the St. Olaf (DSND) which sailed from Oslo to Hamburg on June 11, 1870. Of course, that raises more questions. Were there transatlantic lines other than North German Lloyd out of Hamburg at that time? If the St. Olaf arrived in Hamburg about June 25, is there a listing of departures from Hamburg close to that date? Is there a source where I could obtain a picture of the St. Olaf and the connecting ship (once I find it)? I did find the web site that is posting the Hamburg passenger lists, but the earliest date so far is 1890. Thanks!