By A Mystery Man Writer
Prime Same-Day to become chargeable - ChannelX
A Closer Look: How Senator Klobuchar's Bill Would Ban Prime, by Adam Kovacevich, Chamber of Progress
How are Shipping and Delivery Dates Calculated? - Customer
teases one-day delivery for Prime customers
Prime to offer free same-day delivery
Prime launches free same-day delivery in 14 cities
Prime will soon include free 1-day shipping
Prime Free Shipping: One-Day Delivery on $1 Orders
Here's What Charges for Delivery for Prime and Non-Prime