Can someone tell me files with the suffix .alb are?

I recently received a zipped file a pictures from a relative. When I 
unzipped it, it contained three file files, all with the .alb suffix. 
Now the graphic viewer/converter on my Mac recognizes 75+ formatys 
but this one is unknown.

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Bob Batson                            L 39 12 14 N 94 33 16 W
rcb@kc.rr.com                         Kansas City
TCS - Mystic Fire Priest              USDA Zone 5
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Under the most controlled conditions, the experimental apparatus
will do exactly as it pleases.