Orange blazed trail heads NW from here, links to trail stub at Holden/Ronchetti border.
https://www.shirley-ma.gov/sites/g/files/vyhlif5001/f/uploads/trails_map_2.pdf
There is a link (Blue dots) from this trail NE to the Holden Road trail.

This part of the trail is a loop around a Beaver "Pond", blazed red. The loop connects west with red/yellow roughly along the property line. There is a red blazed connector trail to Center Rd parking (maybe 3 spaces, off-road). The segment from the connector to the Spruce Swamp Brook is blazed light blue.

This map is missing many trails existing and shown on the town map at https://www.shirley-ma.gov/sites/g/files/vyhlif5001/f/uploads/trails_map_2.pdf
The trail along the brook is yellow blazed. After leaving the brook, it heads roughly due south, and connects (with a little offset) to the trail heading to the south end of the property

Currently not a through path per Stow Conservation .

Only authorized trail here is the yellow trail to Trefry Lane

Not an authorized trail per the Stow Conservation Commission

These are "herd paths and are not authorized by the Stow Conservation Commission

Not an authorized trail per the Stow Conservation Commission.