The first BG in 7-1 in SMB2. I didn't see that anywhere in the site so I ripped it :P
ExGFX90.bin - The ExGFX
Level175.mwl - The sample level. Is level 175
Map16page 46.map16 - The map16. Use this if your LM version DOES support map16 (1.90 - 2.10)
For 1.90minus (Page 46).bin and For 1.90minus (Page 46)G.bin - The map16. Use this if your LM version DOESN'T support map16
Palette.pal - The palette
Moderator's note: The background in the sample level goes a bit odd if you change the background colour (it leaves a white row of tiles and cuts off before the in-game level bottom). However, it's easily fixable with copying/deleting a couple of rows.