I assume that unless otherwise specified Spenser would use a first-press olive oil and wine vinegar.

The Godwulf Manuscript ch. 12

Base: not specified

Dressing:
1/2 cup olive oil
2 Tbsp lime juice
2 Tbsp wine vinegar
2 Tbsp honey
a few mint leaves freshly chopped

Whisk together and pour over your choice of ingredients.

God Save the Child ch. 8

Base: Sliced native tomatoes on a bed of Boston lettuce

Dressing: Oil and vinegar.

Early Autumn ch. 9

Base: Half a head of Bibb lettuce

Dressing: 
1/2 cup olive oil
1/4 cup vinegar
1 tsp prepared mustard, or 1/2 tsp powdered mixed with 1/2 tsp water
2 cloves garlic, chopped

Taming A Sea Horse ch. 11

Base: Endive and avocado 

Dressing:
1/2 cup olive oil
1/4 cup lemon juice
1/4 cup raspberry vinegar
1 Tbsp honey mustard

Playmates ch. 22

Base: Endive with sliced avocado and mango

Dressing:
1/2 cup first-press olive oil
1/2 cup lemon juice
1 Tbsp honey

Back Story ch. 51

Base: not specified

Dressing: not specified

My guess: any variation on the above.  

Generic Tossed Salad

You can find this in countless restaurants and dinner tables all across America.  


1 head Iceberg lettuce, chopped into bite-sized pieces
1 tomato, cut into wedges
1/2 of a red onion, thinly sliced
1/2 of a cucumber, sliced
1 radish, sliced
a few black olives

Iceberg lettuce is the perfect base, being bitter yet tasteless.
Make sure the tomato is a supermarket variety, picked when green
and reddened by chemical treatment to survive for weeks. The more
it tastes like cardboard the better.

Add a cheap bottle of Italian dressing and toss.

Bullets and Beer Salad

When I make a salad it is a meal, not a side dish.  

1 head Boston lettuce, torn into bite-size pieces
-or-
1 head Romaine lettuce, with the leaves torn and the veins discarded

a handful of cherry or sweet grape tomatoes
several chunks of sharp cheese, preferably Vermont cheddar
several chunks of Hickory Farms summer sausage or hard salami
several green olives
two or three pepperoncini
a few sweet gherkins, sliced
a goodly layer of herb and garlic croutons

Top with half a bottle of Thousand Island dressing.