National Acoustics
1033 "Reso-Phonic Spanish"

| Years built | 1956-1958 |
| Body | Solid, available in Red and Ivory, Black and White, and White Pearl with Black |
| Notes | Shallow-depth resonator cone with sound ports on the front and back of the instrument. |
1150

| Years built | 1951-1958 |
| Body | Spruce top, mahogany back and sides |
| Notes | Body built by Kay; catalog shows rectangular bridge |
1155/1155E
1155:
1155E:

| Years built | 1948-1960 (1155), Ca. 1955-1960 (1155E) |
| Body | Spruce top, mahogany back and sides |
| Notes | Body built by Gibson; catalog shows rectangular bridge; the 1155E had a pickup located under the fingerboard and volume and tone controls. |
1191

| Years built | 1953-Ca. 1955 |
| Body | 13.25" wide |
| Notes | Body built by Harmony |
Blue Grass 35

| Years built | 1964-1967 |
| Body | Res-o-glas |
| Notes | Shallow-depth resonator cone; catalog shows different cover plate and tailpiece, white body and no sound ports on upper bout |
N700

| Years built | 1967-1968 |
| Body | Spruce top, maple back and sides |
| Notes | Body built by Kay; catalog shows natural finish, pin bridge and unadorned pickguard |
N710

| Years built | 1967-1968 |
| Body | Spruce top, mahogany back and sides |
| Notes | Body built by Kay |
N720

| Years built | 1967-1968 |
| Body | Spruce top, mahogany back and sides |
| Notes | Body built by Kay |
N730

| Years built | 1967-1968 |
| Body | Spruce top, maple back and sides |
| Notes | Body built by Kay |
Other Acoustics

| Years built | 1967-1968 |
| Notes |
These instruments were built entirely by Kay. Left to right: N550: Spruce top, mahogany back and sides, nylon strings N580: Spruce top, maple back and sides N575: 5-string banjo N575T: Tenor banjo N575P (not shown): Plectrum banjo All banjos had maple necks and resonators. |
Updated 4/18/2010