- Musescore: https://musescore.com/user/3154401/scores/5315130
- Free Scores: http://www.freescores.com/download-pdf-sheet-music-linus-and-lucy-55640.pdf
- 8notes: https://www.8notes.com/scores/21244.asp
- Sheet Music Direct: https://www.sheetmusicdirect.com/en-US/sheetmusic/song/linus-and-lucy/10010661
These websites provide free sheet music downloads in PDF format, so you can easily print them out and start playing. It's important to note that some websites may require you to create an account before downloading the sheet music.