Richard Jeptha Van Valkenburg Appointed as Notary Public

Link to the Colorado Department of Personnel and Administration: Historical Records Index Search
http://accipiter.state.co.us/archive/publicrecordsearch.do

I found several records for Van Valkenburg:

Record Type: Probate
Name: Van Valkenburg, Galen B.
County: Boulder
Year: 1896 Month: Day:
Origin: Boulder County
Case No.: 1032


Record Type: Governor Appointments
Name: Van Valkenburg, R.J.
County:
Year: 1880 Month: May Day: 15
Origin: Governor
Governor: Pitkin
Kind of Appt: Notary Public
Book: 3; Page: 394

Access to these is through email to the department and includes a fee. I have not yet tried to get copies.

Edward Van Valkenburg 1850 U.S. Census

1850 Census Record with Edward Van Valkenburg and Alice Van Valkenburg, Richard and Cordelia Van Valkenburg with their children Martha Jane, Alice, and Galen.