I have a little info stash going here for any interested parties:
Portland Safe Co.
Established

by George B. Cellars
GB Cellars - Born 1868, Carrollton, OH
Died Dec 23, 1945, Medford, OR
Sec 07, Lot 134, Grave 1, 146172437 River View Cem.
4 year Councilman at Large in PDX, 1907 with focus on moral and business changes.
Banker, OR State Bar Lawyer and “prominent” Mason of Willamette Lodge 2.
Articles Collected:
August 11, 1904
At present, first article I’ve found referencing PDX Safe Co.
Portland Safe Co. described as the manufacturer of safes here, not an agent or second hand seller. It alludes to a “constant study” of their safe technologies as a top safe manufacturer. No mention of George, or any indication of actual product availability. Is this a bait article prior to inventory arrival or business plans?
Address Listed: 70 6th St [Portland, OR]
April 20, 1907
L.C. Smith & Bros Typewriters ad proudly lists an excessive amount of businesses in the area who use their product.
Portland Safe Co. is listed here. The fated typewriter of December 1910 infamy.
May 1, 1907
“NO. 27.”
“Try George B. Cellars, President of Portland Safe Co. for Councilman at Large.”
May 3, 1907
https://photos.app.goo.gl/yjS5Td6ChLWXdDAT8
Nice photo of this old feller above his ad for political office candidacy.
“Candidate for Republican Nomination for Councilman at Large. A Business Man for Business Administration.”
I see no article for his sucessful election to this office in the papers. He served 4 years in this role.
June 18, 1907
“Portland Safe Co. SOLE Agents for Manganese Steel Safe Co. bank safes and Herving-Hall-Marvin safes. 20 second-hand [examples] of safes and bank safes, very cheap.”
Address Listed: 92 7th St [Portland, OR]
October 22, 1909
“Portland Safe Co. agents for Herving-Hall-Marvin Safe Co. manufacturers of the genuine Hall’s Safe & Lock Co. safes and vaults.”
Address Listed: 92 7th St [Portland, OR]
November 29-30, 1909 in Morning Oregonian
Recurring small ad - “Fire Proof Safes”
Address Listed: 92 7th St [Portland, OR].
Mentioned - “Dec 1 [1909] we are moving to 87 5th St”
December 3, 1909
Recurrence of Oct 22, 1909 article “Agents of H-H-M Safes. How many safes did he have left at this point? What was his actual relationship with the HHM co?
December 23, 1910
“Portland Safe Co. - Typewriter Cabinet and small table” for sale (see April 20, 1907 entry).
Address listed: 85 5th St [Portland, OR] - his office?
“ PDX SC - New and 2nd hand safes” in a meek fashion, 2nd to the typewriter sale above. A one man, 1 typewriter, low inventory operation with big political dreams and more interest in Masonry?
Address Listed here as 85-87 5th St [Portland, OR]
This date has a Mosler ad (not confirmed first) which noticeably trumps the Portland Safe Co. ads and makes a much wider range of offerings.
“Safes at factory prices, repair, lockouts opened, bargains on … safes.” See below for Mosler SC info.
May 1, 1914 in Oregon Daily Journal
61 Defendants Delinquent License Fees Article
Includes our friend at Portland Safe Co.