According to Alex Davidson's discography [in 'The Carter Family' Old Time Music Booklet No 1], you are spot on. The first 2 recordings by the Family were 2 takes of 'Bury Me Beneath the Willow' on 1 August 1927 [the Bristol Sessions]. The first was unissued and the second was issued as Victor Vi-21074. Then followed 2 takes of 'Little Log Cabin By the Sea'. The first was unissued and the second was issued also on Victor Vi-21074. They next recorded 'Poor Orphan Child' and then 'Storms Are on the Ocean' (2 recordings of each) and then Sara recorded 'Single Girl'.