Ambergate Gardens in Chaska has a great reputation for martagon lilies. I don't have any myself, but love their herbs. Hope this link works:

http://www.ambergategardens.com/

The Lily Garden is a great source of lily bulbs. The orienpets do well for me, I no longer bother with the orientals.

If you go out to Ambergate in Victoria there is another place, Venero gardens, that may have lilies too, and you can visit my garden with many lilies. I live 3 miles away. Send me a personal message if you like.

Rick

If Mankato is closer to you, Green Thumb by the Madison East Mall has some in the fall and Drummers has a few too. Neither place is very expensive. From G.T, I have bought: 'Dizzy'--a fairly narrow magenta strip and freckles, 6 'Muscadets' for a friend's bridal table arrangement and if I do say so they got raves on the mostly white with fuchsia freckles in the center, red 'Cobra,' possibly O.T. Lily 'Robina,' several Asiatics and about 6 of my very fav white 'Casa Blancas.' I also grow a lovely old unknown from a friend that I named 'Pink Polka Dot,' because it is a pretty baby pink with lots of freckles.
Hope this helps someone. gramma jan

I failed to mention that the success. I have grown 'Casa Blanca' for about a decade. The only problem is deer got the blooms on one a few years ago. Others less time and the 'Muscadets' for only 2 years, but they are looking more promising than some of the more colorful ones.
gramma jan