John Pearsall accompanied the Mullan Exvedition o7 1658-62 in 
connection with the construction of a military road, along the present 
Northern Pacific RR., from Montana into Idaho anda along the Coeur 
of 
d'Alene branch. The party wintered MSMMEEE at the village of St. Mary's 
(St. Maries). His material is in the Gray and Britton herbaria. No 
botanical report of Pearsall's collections was ever published. 
Dr. J(ames) G(raham) Cooper enumerated the notable trees ob- 
served in 1860 in crossing from Fort Benton to Fort Colville. He made 
a stop at Coeur d'Alene Mission after crossing Mullans Pass. He writes 
of the "western Pogue-Birch", Betula papyrifera var. occidentalis, along 
Coeur d'Alene River, where it becomes "two feet in diameter and sixty 
feet in height, of handsome appearance". He was also deeply impressed 
by the"Thuja swamps along the west slope of the Coeur d'Alene Mountains 
Cooper was an accurate observer and his account of the forest trees of 
our region affords very interesting reading today (Am. Nat. 3: 404-hee, 
John Buttle, member of David Lyall's "Cregon Boundary Com- 
taission" party (cf. Piver, 16), collecied near the Washington-Ideho- 
Britisn Columbia borders, or "ad montes Pend Oreille et Kootenay” and 
on Mooyie River, in 10660. These collections in Gray and Hooker her- 
baria, bear the name oi Lyall on the tickets. 
In 1080 Sereno Watson visited Lolo Pass from the Montana side 
in connection with the Tenth Census survey of the forests. 
J(ohn) H(erman) Sandberg made collections about Granite, Bon- 
ner County, in July 188 
