1848:

Captain Alexander V. Fraser, appointed the first chief of Revenue Marine Bureau in 1843, was detached to proceed around Cape Horn to San Francisco with new brig Lawrence.

1860:

The light in the massive stone Minots Ledge Lighthouse, which was built on the original site of the one lost in 1851, was exhibited.  Work on the new lighthouse was commenced in 1855 and finished in 1860.  "It ranks, by the engineering difficulties surrounding its erection and by the skill and science shown in the details of its construction, among the chief of the great sea-rock lighthouses of the world."