How to join granny squares as you go with slip stitch by Soledad Z

How to join granny squares as you go with slip stitch

no longer available from 1 source show
Crochet
October 2014
Worsted (9 wpi) ?
12 stitches and 3 rows = 4 inches
5.0 mm (H)
1 yards (1 m)
English Spanish Universal
Discontinued. This digital pattern is no longer available online.

How to join granny squares as you go with slip stitch