The ACA Big Red Book Fellowship text ($15), yellow Twelve Steps of ACA Workbook($10), Laundry List Workbook ($12), and ACA Daily Meditation Reader: Strengthening My Recovery ($10) are all available online here at ACA World Service Organization website. Shipping will be added to the cost at the end of your purchase. Many books can also be found on other sites such as Amazon.com. The Serenity Shop is a local business which sells most of these texts as well at a higher price to cover their retail costs. They are located at 3212 SE Division St in Portland.
ACA Big Red Book and the yellow step workbook are also available for purchase at the Alano Club. They are priced at $15 each at the Alano Club. The additional cost for the yellow book is to cover costs for storing and distributing books at the club.
ACA Red Book Audio Version also available at the WSO site.
Breaking The Bonds (aka The Blue Book) <- free, and encouraged reading for newcomers.
The Comline is the ACA quarterly magazine which is published online. The October 2015 issue is out and can be read on the WSO site.
There is an article in in it by Omer G about the origin of ACA. Omer G was the chief editor of the Big Red Book and sythesized information gathered by the old Los Angeles /San Fernando ACA intergroup.