What is the Order for Album Art

Can someone please tell me what the order is for the album art? For example, I have 37 albums listed under the Beatles. But the album art on the right appears to be in random order. The first four listed are, Let it Be, Past Masters, White Album and Anthology 2. Clearly the order is not alphabetic. It also isn't in the order I entered them. Are they simply listed randomly?

Thanks,

George J

[quote=gjetson]Can someone please tell me what the order is for the album art?