Books are an excellent starting point to find architectural plans, sections, drawings and images.
You can use the Library Search to find books about an architect or building. You can also include the keyword plan or plans in your search.
Below is an example search using the terms: Glenn Murcutt plans
The following websites are a source of plans, drawings, elevations or images in Australia but especially Melbourne or Geelong.
Searching the databases Art and Architecture Source and Avery Index to Architectural Periodicals is a good place to start.
Follow the steps below to locate plans, elevations and sections within journal and magazine articles.
The library record below shows a journal article that contains images of building plans.
In these books you will find floor plans, architectural details, photography and illustrations relating to buildings from around the world.