My bike is a Linear long-wheelbase recumbent made by Linear Manufacturing of Guttenberg, Iowa. I bought it in 1991 and have since done a number of upgrades/modifications to it, to make it more suited for the style of riding I prefer.
Here's a list of the items I've done over, along with links to more detailed descriptions and pictures. You will also find hotspots to the same items on the big picture above.
Please note that I haven't listed "routine" items such as derailleur upgrades when all I did was to plug in a new component in the place of a cheaper one.