Here are a few things of interest related to VLGEA:

My Powerpoint

Most recent 10-K
Most recent 10-Q

Grocery Industry info
Services Sector info

GAP Quarterly Financials - note “Other Income” in mrq

Historical Valuation Multiples
Condensed 10-Year Financials
Breakout of Margins

Private label goods are not gaining any ground

Wide moat companies at similar forward earnings multiples:
Economies of scale - Wal-Mart (WMT)
Intangibles - Disney (DIS), Nike (NKE)
Network Effects - American Express (AXP), EBay (EBAY)
High Switching Costs - Oracle (ORCL)

Other:
Video of Third Avenue Management PM on USG (starts about half way through)