Ive Got Peace Like a River is an African-American spiritual. The song compares the peace of God to a river.
For Guitar or Guitar and Voice.
With downloadable mp3 just for audio help or sing along.
With melody line. With lyrics. With standard notation and tablature (TAB).
Easy to early intermediate.
Pages: Two (2) pages.

Just a Closer Walk with Thee is a traditional gospel song that has been performed and recorded by many artists. The title and lyrics of the song allude to the Biblical passage from 2 Corinthians 5:7 which states, "We walk by faith, not by sight"  and James 4:8, "Come near to God and He will come near to you."

For Guitar or Guitar and Voice.

With melody line. With lyrics. With standard notation and tablature (TAB). With Guitar chords.
With downloadable mp3 just for audio help or sing-along.
Early Intermediate.
Pages: Two (2) pages.

Romanesca was a melodic-harmonic formula popular from the mid 16th to early 17th centuries, used as an aria formula for singing poetry and as a subject for instrumental variation.

For Guitar solo.
With Guitar tablature.
With some finger position suggestions.With downloadable mp3 for audio-help.

Pages: 4 pages, 3:10 min.

La del Panuelo is a traditional Latin tune (19th century).

For Guitar solo.

With Guitar tablature. With finger position suggestions. With downloadable mp3 for audio help.

Intermediate.

Pages: 3 pages, 1:40' min.

Londonderry Air is an air that originated in county Londonderry, Northern Ireland.
Here is an arrangement for Guitar solo or Guitar and orchestra. Intermediate.
With Tablature. With downloadable mp3's (one with the Guitar and one without the Guitar). 
Pages: Two pages, 2:35 min.