Found the following hamletworks.org entries referring to line 2975

View Commentary Note for 2975
2975 Hor. Let them come in. 29754.6.4

View Immaterial Textual Note for 2975
2975 Hor. Let them come in. 29754.6.4

View Material Textual Note for 2975
2975 Hor. Let them come in. 4.6.4