They can be purchased on eBay.com auctions, as well as the occasional yard sale or thrift shop. The SP is a panoramic camera with a built-in lens cover, while the AF model is motorized and has a built-in flash. The more basic "A" has few features other than a built-in lens cover. The "Sport" model is also a basic model, but has a different appearance.

Magazine on Compact 35mm Cameras
Panoramic Camera User Group on Yahoo
Instruction Manuals For Kalimar Spirit, Others
Reviews of Minolta, Weston & Others