Hi Danny,
Sorry cannot help with a visit to the AWM in Canberra. Not sure what information you are after although some of the following links may assist. As you probably know Albert was an Australian in the RAF, born in NSW to Robert Henry and Amy Ernestine Nivison-Smith, with birth registered 1918. Hyphenated names can be tricky to research and apparently Nivison-Smith is sometimes listed as Nevison-Smith. There is a file via the NAA under latter which covers the return of personal affects to the family.
regards, Drew
https://trove.nla.gov.au/newspaper/article/12476801
https://trove.nla.gov.au/newspaper/article/138996205
https://trove.nla.gov.au/newspaper/article/133304388
https://trove.nla.gov.au/newspaper/article/133295868
http://ww2talk.com/index.php?threads...d.16652/page-2
https://trove.nla.gov.au/newspaper/article/205139748