[TheForge] Fire Clay

[egilsson-9 at comcast.net]

Hello The Forge members, 

I have been subscribing to The Forge for some time (back when you were all talking goats, fences, etc.) now and have thoroughly enjoyed all the info., 
and banter. I really enjoy it when you all drift off topic, I pick up unexpected extra knowledge along with links to sites for more info and or suppliers whose 
URLs I greedily bookmark. 

I have a question. Where can I obtain fire clay? I have a small portable Farrier's forge that needs lining. I live in Western Massachusetts and when I contacted a local farm supply store was told that fire clay is not available in Mass. Is there another product that I could use without breaking the bank? 
I am new to blacksmithing, I've only taken a beginner's course, so any help would be greatly appreciated! 

Thanks in advance, 
Earl Schacht