The portrait on the left is by Albert Lomer & Co, (again) Queen Street Brisbane. The later pic of the same man is by The London Stereoscope & Photographic Company, London. Dealers in the main just break up an album, price and present the goods in an open shoe box style - I always flick through those offerings and keep tabs on items found at the same place, they often surprise me.
Now to "young me, now me" - avid USA art blogger John Foster posted a blog entry on this site a while back. You might be interested to go a see for yourself + post a set of your own then & now images?