[sdiy] Stripboard source?

[Dan Gendreau]

I am gathering parts to build a custom sequencer along the lines of Steve
Thomas' excellent recent project.

I have so far failed to find a good source for copper strip prototyping
board. The kind that has copper strips running the full length of each row.

I would like to get some fairly large pieces if possible (8x13" or larger).

Can anyone recommend an inexpensive source for this stuff (preferably in the
USA)?

Thanks,
-Dan G.