Recherche dans la collection - After the Big Horns, above Illecillewaet, Selkirk Mts., B.C

Inscription: in brush and brown ink, recto, l.l.: ER [in monogram] oper/ AFTER THE/ BIG-HORNS./ ABOVE ILLECILLEWAET./ SELKIRK MOUNTAINS/ B.C.; in blue crayon, verso, l.r.: 77a ["a" raised and underlined]; in pencil, verso, b.: Two more figs. [?] on this trip. Don't think it is the Illecillewaet, but no one really/ knows. It is down [underlined] stream from Glacier Ho - then up valley to left of curved ..trestle [crossed out]/ at end of loop - at least that is where we go down - I should say, 10 m. from/ Glacier Ho. but maybe not - apply to Math... Marmurra [?]; u.l.: 77a ["a" is raised and underlined]; u.r. written vertically: BY TRACK/ AND/ TRAIL/ scarlet