Are there any good examples of government-backed VC's? Working on a $100m fund and would love to see how their thesis/fund is presented, where fund-raising is not the challenge, but deal-sourcing and selection may be.

No. Most government backed VCs massively underperform because the government's objectives are often mis-aligned with the VC (to perform really well). Also, the government's bureaucracy and processes force the GP to dedicate an enormous amount to activities that are not related to investing or providing value add to their portfolio, which further reduces performance.