looking for the elizabeth barrett browning poem which says something to the effect: the "earth is stuffed full of heaven". . .

The line "Earth's crammed with heaven" is from Book 7 of EBB's very long poem Aurora Leigh. Here's the line in context...

'There's nothing great
Nor small,' has said a poet of our day,
(Whose voice will ring beyond the curfew of eve
And not be thrown out by the matin's bell)
And truly, I reiterate, . . nothing's small!
No lily-muffled hum of a summer-bee,
But finds some coupling with the spinning stars;
No pebble at your foot, but proves a sphere;
No chaffinch, but implies the cherubim:
And,?glancing on my own thin, veined wrist,?
In such a little tremour of the blood
The whole strong clamour of a vehement soul
Doth utter itself distinct. Earth's crammed with heaven,
And every common bush afire with God...

(lines 810 to 822)

Does anyone know who the poet referred to is?

She is probably referring to Emerson's "Epigram to History", "There is no great and no small."

Stephen