found: Work cat.: NUCMC data from Or. State Univ. (Corvallis) for Matthews, O.V. Papers, 1905-1969(Weeping spruce)
found: Collingwood, G.H. Knowing your trees, c1978:p. 88 (Weeping spruce; Brewer spruce; Picea breweriana Watson; limited to the Pacific slope where it is generally restricted to the Siskiyou and Shasta mountain regions of Northern California and adjacent areas in southwestern Oregon)
found: Web. 3(Weeping spruce; Picea breweriana, called also Brewer's spruce)
found: Ox. encyc. trees world:p. 70 (Picea breweriana, Brewer's spruce, Siskiyou spruce)