Here’s the list of works available in e-book format.  Let me know if I’ve missed any!

Trout Fishing in America –  See Houghton Mifflin’s list of where you can buy the e-book.   Amazon, B&N, Google & Apple are on the list.

Revenge of the Lawn – Canongate has it available on their site & Amazon

Sombrero Fallout – Canongate’s site & Amazon

So the wind won’t blow it all away – Canongate’s site & Amazon

Combo:  Trout Fishing in America, In Watermelon Sugar & The Pill vs The Springhill Mine Disaster –  See Houghton Mifflin’s list of where you can buy the e-book.   Amazon, Apple, B&N & Google are listed although when I checked only B&N had it.