You can easily pull receipts and transactions records here: https://www.coloradogives.org/index.php?section=content&action=dynamic&cmsID=48
Enter in the email you use when you give and choose the option from the pull down menu that best fits your needs.
Please note that if the organization that you gave to receives Child Care or Enterprise Zone Colorado State Tax Credits, the receipt for your donation as well as the credit information will come directly from the organization you gave to.
Contact information for organizations is available on their profile pages on ColoradoGives.org, use the Search to find your organization and click on their logo, this takes you to their profile page. Contact info is underneath the picture/video area.