I saw this post a few weeks ago but I was at work. By the time I got
home sad to say I had forgotten about it.
I live in Colorado and I have been searching for my older half sister
for years.
Colorado is one of the FEW states that allows for siblings to search
for adoptees. Back in the 1990 there use to be a group called "Siblings
of Adoptees" but I didn't have the money to pay for their help so I went
out on my "own" to do what I could at the the time though I lived in NC
so searching records was NOT an easy task, not to mention I didn't own
a computer much less know what internet was (early 90's).
There are some registries you can check out if you are interested.
adoption.com (I am in the "searching for siblings" section).
adopteeconnect.com (I just found this so I have not yet registered).