Stars of the 20s by Egallus

Several lights, which are clued and entered normally, are also members of a large group. 38 (unclued) is also a member of this group; allowing it to be completed uniquely despite being almost wholly unchecked. All lights are in Chambers (except one geographical noun).

ACROSS
            1             Proceed laboriously in sorrow, a deep ... (4)
            5             ... public disgrace in Florida - goodness! (6)
            12             Turn inside out, green after last of sardine (5)
            13             Large vessel for washing seaweed (5)
            14             Censure Los Angeles in sado-masochism (4)
            15             Fruit found on the ground at Heathrow, perhaps (4)
            16             Wear away bendlets, dexter and sinister, interlaced with a mascle (4)
            17             After cannabis Scot eyes hootch (6)
            18             Hemp riata knotted round the outdoor arena (12)
            20             Woo judges (5)
            21             Head, that is, might be under it (6)
            23             Gary makes what is rolled out (6)
            24             Wastrel semi-angler trails after fish (5)
            25             Faulty telescope: deceptive confusion (12)

            28             A bugle? Silly pretentious nonsense (6)
            30             Local mist all right in extremities of Ross-shire (4)
            33             Italian flower - 500 dead in rock (4)
            34            Low character loses million: temporary unforeseen occurrence (4)
            35            Milwaukee's beery "God save", for example, in tempting ... (5)
            36             ... little pie made from pastry (dry, not strong) (5)
            37             Avenger's horses (6)
DOWN
2         Worthless carthorse in a veritable ... (4)
3           ... small state (European) - remove a letter (4)
4         Cell bars: the Tory upset (Liberal in) (12)
6         River dweller up to waterfall (5)
7         Weighty old unionist? (7)
8         Mammy's boy leads me; I'm a dancing girl (4)
9         Contract, also render bankrupt in the circuit (12)
10        Current affairs programme: stagger after the main points (8)
11        Edge from bat's top edge (4)

12        Wear away the heart of Steffi's winning serve (6)
19        Indian chief: senior officer in Dum-Dum, perversely (8)
21        Workers' cement made with energy, for example, in the sea (7)
22        Half of French see without payment (6)
26        Begin to develop round the Italian base (5)
27        Exchange for money (one small Eastern coin) ... (4)
29         ... or another in Lincoln to pay as a penalty formerly (4)
31        Turkey off; fish not in fashion (3)
32        Long ago about 9 grams of tea-leaf (3)
To enter this competition, send your entry as an image or in list format ,  to derekharrison@yahoo.com before the 8th July 2010. The first  correct entry drawn from the hat will receive a copy of  Chambers Crossword Dictionary which has been donated by the publishers.