The Boston Packing Co. was once situated on the improbably small triangular block bounded by SW 3rd Avenue and Ash and Ankeny Streets. The Multnomah Hotel is just off camera to the left. This building can be seen in the distance in this previous Vintage Portland post. The Union Gas station visible in the distance can also be seen in this post.
(City of Portland Archives)
Vintage Portland 
Nice to see one of the old ‘Great Light Way’ arches at center-right.
http://www.cafeunknown.com/2009/03/rise-and-fall-of-great-light-way-1890s.html
Nobody would happen to know any more about that butcher / grocery on the ground floor of Boston Packing, would they?