Acquire (linked from article) is a favorite in my family. We've always played that your cash on hand is public... I can't find rules that suggest otherwise. Anyway, great article and check out Acquire. PS CMU has a CS class built around the game... http://www.cs.cmu.edu/~lanthony/classes/SEng/Design/intro.ht...
I was quoting the version of the rulebook I've seen, bottom of page 3 in this PDF: https://www.wizards.com/avalonhill/rules/acquire.pdf