You can search for Oregon State legislative tracings in the Oregon Secretary of State's online digital repository. They have a regular collection of the tracings prepared after 1981. The Oregon State Archives prepares these tracings by request for a fee. These tracings detail what the Oregon Archives has available and can make your work much easier. Existing tracings are made available for free to the public on the Archives web page.
Oregon Secretary of State Legislative Tracings
When searching the tracings online use the following syntax: [Year] [HB or SB] [Bill Number]
If a tracing is available skip to step 6
If no existing legislative tracing is available for your bill the Oregon State Archives Research staff will prepare one for a fee. They will also locate and copy archival documents for an additional fee.