W. J. Armstrong:
Unfortunately, only 4 years of local newspapers from Warrnambool are available on Trove, so all I know is that Mr Armstrong moved from Kepler Street to Liebig Street in 1918.
Edward ( 1841-1925) passed his tailoring business on to his son in 1918. Fredrick( 1880-1945) became the mayor of Warrnambool. He collapsed and died suddenly during a council meeting, soon after an operation.
Cramond & Dickson:
In 1855 John Glass Crammond (1831-1910) and James Dickson ( 1831-1910) started a general store specialising in drapery imported from London. The partnership was dissolved in 1886, with the business staying with the Dickson family until 1974. It was the oldest store in Victoria trading under its original name. James Dickson junior, who married the daughter of the co-founder, would manage the business after his father.
Sadly, the store has been demolished. For further information, see http://adb.anu.edu.au/biography/dickson-james-5978 and http://www.picturevictoria.vic.gov.au/site/corangamite/wmbl/8723.html .