The option doesn't appear on the one I want to delete. It did on others, though.

It sounds like you may be trying to delete an ideabook that was shared with you? Please shoot us an email through support.houzz.com and we can help you out. Thanks!

Thank you Brittany! Was attempting to do it for so long!

Click on the ideabook. In the lower left hand corner look for "Settings".

You'll see the option to delete the Ideabook.

bobparrot has the right answer. ^^ This worked.

I do not see any delete under settings or ...

Click on Ideabook, upper left is a gear, click the gear and a red message will show up that says "delete (name of idea book)". this works, but houzz makes it incredibly hard to navigate around their site, and to save pictures to your computer files