Logs several feet across
The Forestry Building's log ends appear to be roughly 4 to 5 ft across against a crowd of about 60 people.
The questionWhere did trees that size come from, and how were they moved and raised with 1905 equipment?
Investigate · Portland 1905
Forestry Building at Lewis and Clark Exposition
1 clue in this photo
Photo: Unknown photographer · Public domain · via Wikimedia Commons
Same kind of clue, elsewhere
#10Twelve men and a tripod to plant one treeIf one tree took this much effort, what did the palaces take?
Carriages for scale along the north-east frontAt that scale, what did the hauling and erection really require from a horse-powered city?
Crowds give the scaleHow many stone-setters and teams would a hall like this need on the timeline recorded?
The Galerie des Machines at true scaleHow was a span that size raised for a single season?
The Court of Honor with crowdsAt this scale, what were the crew and horse counts needed for about 200 buildings in about two years?
A horse and wagon unloading cratesHow many wagon trips would it take to supply a whole fair this way?