Contributed by Jonathan Stevenson / “Dear John” – Lina McGinn’s absorbing and ostensibly playful solo show of sculptures at the expansive Europa Gallery in the Two Bridges neighborhood – manifests fine technique and a conceptual sensibility deeper than it might first appear. Using fiberglass resin and polymerized gypsum to isolate and fix discarded and distressed cardboard boxes in a range of anthropomorphic poses, she achieves something quite familiar in art – the personification of inanimate objects – in a singularly inventive way.