Journeys
The expeditions, reassembled
Every dated label is a diary entry. Read a collector’s labels in order and the voyage comes back: the islands in sequence, the days at each, the specimens from every stop. 5 journeys so far, 1923 to 1923, 1,267 specimens between them.
3 collectors and expeditions54 days in the field37,973 km between stops968 photographed specimens
5 journeys match



Ditlev Due Thaanum
10 islands of the United States · May – Aug 1923
Ditlev Due Thaanum across 10 islands of the United States, May – August 1923918 specimens · 15 stops · 96 days · 11,766 km
Edward Leonard Caum
7 islands · 1–28 Apr 1923
Edward Leonard Caum across 7 islands, 1–28 April 192378 specimens · 10 stops · 28 days · 2,863 km
Tanager Expedition
3 islands · Jul – Aug 1923
Tanager Expedition, July – August 1923160 specimens · 5 stops · 35 days · 20,287 km
Edward Leonard Caum
3 islands of the United States · 12–29 Jun 1923
Edward Leonard Caum in Nihoa, French Frigate Shoals and Mokumanamana, 12–29 June 192351 specimens · 8 stops · 18 days · 883 km
Tanager Expedition
10 islands of the United States · Apr – Jun 1923
Tanager Expedition, April – June 192360 specimens · 8 stops · 62 days · 2,174 km
How a journey is found
Every specimen with a full date and a known collector is a diary entry. The days are read in order; a gap of more than three weeks ends one journey and starts the next. Days spent where a collector lived most of their life are home, not travel, and are left out.
A journey needs at least five days, forty specimens and two places. Within it, a run of days spent within about ten kilometres is one stop; the stop’s point is the middle of the labels that carry coordinates, or the island’s centre when none do.
Companions are the people whose own labels put them in the same place on the same days. Staff can name a journey, write about it and feature it; everything else here is read straight off the specimens, and is rebuilt as the records improve.
