I'll post Carol's comment here, since it brings up a very different perspective and worth thinking upon:
Little Lam, who made thee?
Looking at the Thelemic links that Hawks supplies, I'm struck by the way the writers miss some of the visual aspects of the Lam image.
Lam is a gateway all right. A vulva.
While the version Hawks uses is cropped to fit her Strieber cover art relationship, there are other versions available online that are not so murky. See for example this closeup at http://www.the-equinox.org/vol3/eqv3n1/LIBER71/lam.jpg
Let's play fashionista for a moment. What, precisely, is Lam wearing? One of Ed Wood's angora sweaters? A garment made out of the pelt of an Airedale? Or is it pubic hair?
What looks like hands pressed palm to palm at the bottom of the portrait in the smaller reproductions online clearly is not when you look at a better reproduction. In context, they are far more likely to be labial folds than fingers. Note the radiating lobes around the mouth, which resemble no normal chin structure, nor one customarily mentioned in descriptions of Greys. Thinking of them as anal ridges fits the vulval aspects, both in location and context.
If you are feeling like stretching the boundaries further, there's a fair argument to be made that Lam's head echoes the Venus of Willendorf.
Consider "his" cheeks to be her thighs, his dark triangular eye area to echo her broad pubic triangle. The highlighted rounded areas just above Lam's eyes show hints of nipples. The highlighted nose area rising up and dividing into two arms that set off the upper forehead echoes the uterus and fallopian tubes.
What might this interpretation mean on any magickal level? I don't do turgid OTO-speak, so I can't supply meaning in that context, other than the self-evident notion that we do all come from an egg, and are of women born.
But I do know that not being able to accurately describe what's in front of us is the downfall of many trying to interpret the strange things they've seen, and really gets in the way of knowledge, especially when these interpretations ossify into the accepted explanations.
I encourage you to check out her blogs as well.