The State of WA publishes a variety of large datasets on government contracts that are often of interest to transparency advocates and the civic tech community. Here are a couple of examples that deserve more attention:
Agency Contracts with vendors active in 2014
(data provided by WA Dept of Enterprise Services - click here for the table)
Pass-through contracts with quasi-governmental organizations
(data provided by WA State Department of Commerce - click here for the table)
Visualization of some of pass-through local gov't contracts: